NEW: For the German regulation "NELEV" and "EAAV"The grid decoupling relay UFR1002IP is the "big brother" of the UFR1001E and monitors voltage and frequency in three-phase and AC grids.With a color LCD display (German/English) and joystick, it is even easier to operate than the UFR1001E. Measured values and settings are clearly displayed. The device can be programmed, updates installed and the alarm memory read out via the integrated IP interface. The real-time clock (with power reserve) simplifies the traceability of the alarms. Up to 1,200 V can be monitored in conjunction with the VG1200 coupling device. The device has a two-channel, single-fault-safe design and thus meets the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. If monitoring is activated, the device does not switch on again if a switch-off error is detected.Limit values for different applications are preset. Where permitted, they can easily be changed. If the nominal voltage is changed, the device automatically adjusts the limit values. With the standby input, a remote shutdown can be implemented, e.g. with a ripple control receiver.Monitoring ofUnder/over voltage 15-520V (with ZIEHL VG1200 coupling device up to 1,200 V)Under/over frequency 45-65 HzVoltage quality (10-minute average)Vector shift 2-65°ROCOF, rate of change of frequency df/dt 0.100...5.000 Hz/sZero voltage U0 (ANSI 59v0)passive anti islanding protectionFeatures:single-fault-proof, with monitoring of connected switch (can be switched off when using the integrated switch of PV and battery convertersProgrammable restart attempts in the event of a switch-on error in the connected switchRelay K3 with programmable functions, including life contact, delayed switch-on signal for switches or error messagesResponse time adjustable 0.05 … 300,0 sSwitch-back time adjustable 0 … 6,000 sPreset according to VDE-AR-N 4105-2018-11 (Pr 1.02, Pr 1.08 + 1.09) and VDE-AR-N 4105-2011-08 (Pr 1.01)Preset according to VDE-AR-N 4110-2018-11 (Pr 1.11-1.14) and bdew guideline (Pr 1.03-1.06)automatic adjustment of the switching points when the nominal voltage is changedAlarm counter for 100 alarms (with trigger value, cause and date/time, time of restart)3 programmable digital inputsStandby counter and timer with standby on/off date/timeTest and simulation function with measurement of switch-off timesSealing option and code protection for settingsInterface ethernet TCP/IP, values available via modbus TCPSimple commissioning and programming thanks to preset basic programs and transmission via IP interfaceSupply voltage AC/DC 24-270 VHousing for DIN-rail-mount, 105 mm wide, mounting height 66 mmAccessory: Installation frame ER6 for panel mount

The grid- and plant protection device UFR1001E monitors voltage and frequency in plants for owngeneration of electricity. It complies with the requirements of VDE-AR-N 4120:2018-11, VDE-AR-N 4110:2018-11, VDE-AR-N 4105:2018-11, G98 and G99, ÖVE/ÖNORM E 8001-4-712:2009 and other standards for generators connected to the public grid.The UFR1001E is a dual-channel device and thus one-fault-proof. The function of the output-relays and of the connected switches can be monitored with feed-back contacts. When a connected switch does not switch off, the UFR does not switch on again. When a switch does not switch on it makes 2 restarts and thus improves availability of monitored plant.The limits are pre-set according to VDE-AR-N 4105-2011-08, VDE-AR-N 4105:2018-11 and other standards. They can be changed if required and be protected with a code and/or a seal.With a 2-step test both channels can be tested individually and the triggering time of connected switches is measured.The standby input allows a remote shutoff e.g. with a RCR.NEW: Our UFR1002IPWould you like to measure upt o 1,200 V?You need an interface (Modbus TCP)?You want a plain text LCD display?You need a seperate life contact?Then Take a look at the new UFR1002IP! 

Measuring point change-over switches allow the connection of up to 16 measuring points to 1 measuring device, e.g. an analog input of a PLC.The inputs can be selected with a BCD-Code. Manual selection can be made with a code-switch. In automatic mode, the inputs are polled (tact-time adjustabe) and thus be displayed in succession. When using a measuring point change-over switch, only 1 measuring input is needed to collect multiple values.Especially with slowly changing signals like temperatures, measuring every other second is enough. Expensive inputs for Pt100 or 0-10 V/0-20 mA at PLCs can be saved.With the MUM16, alternatively 16 measuring points with common ground or 8 measuring points with separated ground can be switched.PLC-compatibel. Channelselection over 4 bit parallel (24 V), e.g. PLC or by a code-switchOptional switching + or -Enable-input for using multiple MUM in parallelMonitoring of up to 16 signals for one limit with only 1 limit switch16 channels (0/4 ... 20 mA, 0 ... 10V, Pt 100) with common ground8 double-channels (= Pt 100/ 3-wire and thermocouples)Simple configuration with 3 DIP-switchesSupply AC/DC 24-240 VLED-display for selected channelTact-time in automatic mode adjustable 0,5 ... 10 splug-in terminalsHousing for mounting in switchgear cabinets or fuse boxes, 140 mm wide, mounting height 55 mm

Temperature Relays TR660IP monitor up to 6 sensors for up to 7 limits. Different sensors can be connected at the same time, e.g. Pt 100 (RTD) and PTC thermistors. Typical applications are monitoring of motors, generators or transformers. An other application is the use as a two or more step controller with additional monitoring of over- or undertemperature or monitoring of differences in temperatures of 2 sensors.Preset programs allow easy setting e.g. monitoring of transformers with/without monitoring of temperature of core or with/without controlling a ventilator.If the evaluation "2 out of x" is activated with several connected sensors, an alarm is only triggered when the limit value is exceeded in 2 sensors. This prevents false alarms due to a fault in one sensor. Operation can be made at the device or with a standard browser via Ethernet.6 inputs for sensors Pt 100, Pt 1000 and PTC, mixed sensors possible7 alarms / relay outputsalarm 2 of x = alarm only when limit is exceeded in min. 2 sensorsmonitoring of difference of temperaturesmonitoring of rate of change of temperaturelogging of temperatures and historypreset programs for protection of motors, transformers and moreinterface ethernet TCP/IP, values available via modbus TCPprogramming with browser via TCP/IP or with joystick at devicecoloured LED display for clear display of temperatures and states of alarmsuniversal power supply AC/DC 24-270 VAccessory: Installation frame ER8 for panel mountTR660IP RS485:  interface RS485 (modbus RTU)TR660IP analog:  4 analog outputs 2x 0/4 - 20 mA and 2x 0/2 - 10 V, isolated from sensor inputs, individually programmable. 

With its 4 digit, 14 mm high display, Digital Panel meters of MINIPAN® 300- series allow the accurate display of different values in the range -1999 ... +9999.Only 3 designs cover the measuring of DC voltage and current, AC voltage and current and temperature with Pt 100- sensors (RTD).The display can be easily programmed by the customer (e.g. input 0-10 V --> display 0-350.0 ms or AC 0-1 A ---> 0- 400.0 A With the built-in universal power supply AC/DC 24-240 V it is especially versatile. 

Switching-Relays Typs TR 122 D(A) monitor the input-signal for 2 limits. The TR 122 DA transduces the measured temperature/resistance to a proportional DC-current. Applications of the TR 122 D(A) are:Monitoring of temperatures with pre-alarm and alarm in machines and plantsControlling of temperatures e.g. for heated sample gas lines or refrigerating plantsTransducer for Pt 100 (RTD) and resistance (TR 122 DA only)Overview of Functions1 input sensor, Pt 100 (RTD) or resistanceMeasuring ranges -199...850°C / 0...850 Resolution 0,1 °C / within the ranges -19,9...99,9 °C / 0-99,9 2 relay outputs (each 1 change-over contact)1 analog output 0/4-20 mA scaleable (TR 122 DA only, not potentially separated from the inputs)Universal power supply AC/DC 24-240 VStorage and display of the measured MIN- and MAX-values 

The Safety Temperature Limiter type STR 100 is an electronic thermostat monitoring the temperature of heating equipment and machinery. When the permitted temperature-limit is exceeded or in case of a malfunction, the STR 100 switches off without delay. An active reset must be made for a restart. The temperature limit is adjustable with a scaled potentiometer. An unintended or unauthorized adjusting of the limit is prevented through a lead-sealed transparent cover.With supply voltage switched on, the STR 100 operates in a changeable lockout mode and the relay must be started by a reset (manually with built-in reset button or external reset) to make contact (no) close. Applicable for plants with supervised operation. The mode of operation corresponds to type 2BJK according EN 60730/VDE 0631.The temperature is measured with a Pt 100 resistance temperature detector (RTD) according to EN 60751 / IEC 751. The process qualification in combination with the sensor must be proved. To fulfil affords for higher safety functionality the function has to be routine-tested periodically. The thermostat series STR 100 meets safety category 3 (Safety of machines EN 954-1, TÜV Rheinland documents T 24/00 + T103 2007 Z1 + T103 2007 E2). If safety approval is recommended only use listed RTD.Temperature LimiterA temperature-limiter is an equipment that switches of permanently (locked) after the limit has been exceeded. A reset (manually or with a tool) is possible after the temperature has fallen below switch-back point (limit minus hysteresis).Safety Temperature LimiterA safety temperature limiter is a limiter that fulfils in addition the requirements of extended safety according to DIN 3440. 

Temperature relay to protect transformers against excess temperature and to control a fan.The temperatures in the windings are monitored with three Pt 100 sensors. The core temperature can be monitored with a fourth sensor.The 4 alarms/output relays are used to control the fan, to signal an advance warning and to switch-off the transformer. Various programs facilitate using the alarm ideally for each application. Depending on the program, e.g. an extra relay is available for the fault message or for triggering due to exceeding the maximum core temperature.Other usesAlternatively, with the fourth sensor the temperature of the room the transformer is located in can be monitored and, with the alarm, the room ventilation can be controlled. The device can also be used for other tasks for temperature monitoringe.g., for motors.Overview of the functions4 Sensor inputs Pt 100 (RTD), 2 or 3-wire connectionLarge monitoring range -199…+850°C / -199...+999°F4 Alarms / Relays3-digit digital display (resolution 1°C / 1°F)4 LEDs sensor4 LEDs relay4 LEDs alarm1 LED errorControl voltage AC/DC 24-240 VClear displays and simple programmingMin and max sensor values can be savedCode lock against unintended / unauthorised changes to the settingsOptional RS 485 interface with Modbus RTU protocolEasySimulation for simple sensor value simulation 

The Pt 100 thermostat TR600 is a temperature controller and monitors up to six Pt 100 sensors at the same time. Six switching points and six relays permit almost any combination of switching action. It also can select the highest temperature of a group of three or six sensors. The temperatures of two sensors or groups of sensors can be issued to 2 analog outputs i.e. for remote displays or further evaluation. Programming is very variable and simple.Due to the fact that 6 type Pt 100 sensors can be connected, the unit is especially suitable for temperature monitoring wherever up to 6 different measuring points must be monitored simultaneously:motors and generators with simultaneous monitoring of bearings and coolant.transformers with additional monitoring of the core temperature also.power machines and plantsApprovalUL E377414 Process Control Equipment, Electrical - ComponentOverview of functionsMeasuring and monitoring range -199 ... +800 °C6 sensor inputs with 2- or 3-wire connection7 relay outputs with change-over contactAlarm 1 … 6 relay K1 (11/12/14) ... K6 (61/62/64)Sensor Error Relay K7 (71/72/74) monitors sensor break or sensor short circuit.2 analog outputs, 0/4...20 mA and 0/2...10 V, with individual scaling.Universal power supply. 2 ranges AC/DC 24-60V or AC/DC 90-240 VUniversal power supply AC/DC 24-240 VTerminal for USB-Stick for up- and downloads of sets of parameters and for firmware-updatesAccessory: Installation frame ER8 for panel mountAlternative: Temperature Relay Type TR660IP 

The PTC-resistor trip device MSF220SE monitors the winding temperature of machines and equipment. Signals, that can be used as ”early warning" or ”malfunction" (switching-off), are transmitted as soon as the admissible limit temperature is exceeded.Two PTC-circuits can be connected to this unit. The integrated rise-delay time ensures a reliable mains voltage build-up.Function2 PTC resistor circuits, 1 to 6 PTC each (max. cold resistance of circuit 1500O each)potential-free contact for alarm 1potential-free contact for alarm 2voltage of pin 3 is connectet to pin 1 with a time delay of 2 sec., replacing an additional timing relay.alarm 3 for check of relay K3LED´s signal state of relays K1 and K2relay K3 picks up time-delayedTEST-button for ALARM 1 and ALARM 2NoteThanks to the delayed switching-on of the error message (approx. 2 s) after the switching-on, this device is especially suitable where an auxiliary voltage is not available and the secondary voltage of the monitored transformer is being used. The MSF220SE can furthermore be used advantageously when combining it with operating current releases. For additional devices, the control voltage is available at terminal 1 time-delayed. In case of a breakdown of the supply voltage, the control voltage is available at terminal 7 and can be used as a message. (Attention! This message will also be given for approx. 2 s. after switching-on.)Functional descriptionPTC-circuits in closed-circuit current principle. When the closed-circuit current flows, both output relays K1, K2 are picked up. Approx. 2 sec. after switching on supply power, relay K3 picks up time-delayed, closing the contact circuits at terminals 31, 14 and 31, 24. As soon as the temperature of the early warning has been reached, relay K1 releases (terminal 31, 12 closed), the alarm 1 is given. If the temperature of malfunction is reached, also relay K2 releases (terminal 31, 22 closed). This alarm 2 can be used to switch off the equipment. If the temperature drops to approx. 5 °C below the temperature of malfunction or early warning, the relays K1 and K2 resp. are switched on again.TEST: LED "ON" – flash -> +2 s -> Alarm 1 -> +3 s -> Alarm 2 

The MSF 220 V is particularly suitable for the temperature monitoring at dry transformers. 3 PTC-circuits with different nominal response temperatures (NRT) can be connected to this unit, one for controlling a fan (forced cooling) and two for alarms. Each PTC-circuit is monitored for break and short circuit. This reduces the probability of false alarms.3 PTC-circuitsMSF 220 VU for universal supply voltage AC/DC 24-240 Vintelligent control of fan (relay K0, 1 normally-open contact)ALARM 1 in closed-circuit current mode (relay K1, 1 change-over contact) for pre alarm. Signals also error in any sensor and interruption of supply voltage. ALARM 2 in operation current mode (relay K2, 1 changeover contact). No signal when switching on and off the supply voltage.all output relays potentially separated from each other.monitoring of sensor linesTEST-button (stop possible before ALARM 2)Simple testing with disconnectable monitoring of break and short circuit  (for 10 minutes).LEDs for ON, sensor error, Fan, ALARM 1 and ALARM 2UL recognized componentplug-in terminalshousing for mounting on DIN-rail or wall-mountmounting height 55 mmAccessory: Installation Frame ER4 for panel mount 

This compact device is the smallest version of all our PTCresistor relays.terminals outsideprotection terminals IP 20Relays 1 change-over-contact (co)Replacement for foreign device Zeidler TÜS 

ZIEHL PTC-resistor relays protect motors, transformers, machines and equipment against thermal overload. With ZIEHL PTC Sensors MINIKA ® applied they offer best solutions for nominal response temperatures 60°C…180°C.ZIEHL PTC-resistor relays are designed for PTC-sensors according to DIN 44081 and DIN 44082. Therefor sensor and relays are exchangeable. PTC-resistor sensors are suitable for the installation into windings of electrical machines, bearings and transformers as well as to monitor the temperature of liquid media, airflow and gases.Used in conjunction, they provide a effectively and reliable protection in case ofblocking rotors, heavy starts, countercurrent operationundervoltage and phase failureincreased ambient temperature and hindered coolingThe MS220K2 monitors 2 PTC resistor sets at the same time. If a temperature rise occurs in one set, the appropriate output relay releases. With this relay, 2 PTC-sets can be independently monitored. Functional overview2 PTC-resistor sets, each 1...6 PTC resistors, or bimetal contactsoutput relays 2 x 1 change-over contact (co)LEDs for operation and alarmUL-Recognized Component 

Ziehl PTC thermistor relays protect motors, transformers, machines and equipment against thermal overload. These are according to DIN EN 60947-8 and are thus exchangeable. Used in conjunction with respective PTC thermistors they provide a reliable temperature protection in the temperature range 60 °C up to 180 °C.PTC-thermistors according DIN 44081 and DIN 44082 shall be connected. PTC thermistors are suitable for the installation into windings of electrical machines, bearings and transformers as well as to monitor the temperature of liquid media, airflow and gases. With ATEX approval, explosion-protected equipment in explosive gas atmospheres (marking G: gas) or in areas with combustible dust (marking D: dust) can be protected.FeaturesATEX directive 2014/34/EU1 circuit for 3 or 6 PTC thermistorsShort-circuit detection within the thermistor circuitOutput relay with 1 change-over contact (co)Operating status display with LEDelectronic reclosing lock (disconnectable)integrated RESET-buttonlink for external RESETautomatic RESET at voltage recoveryOperating status display with LED 

With its 4 digit, 14 mm high display, Digital Panelmeters of MINIPAN 352P- series allow the accurate display of different values in the range -1999 ... +9999. Measuring inputs AC (True RMS), DC current and voltage and measuring of restistance and of temperatures with various sensors are combined in one instrument.Two programmable switching points allow applications as limit-switch or 2- or 3-point controller. With EasyLimit the switching points can be set easily. Other parameters are blocked and thus protected from unindended manipulation. With its analog output (option) it is in addition a measuringtransducer. The display can be easily programmed by the user (e.g. input DC 4-20 mA / display 0-350.0 m/s or 0...200 O / 0...3000 mm or AC 0-5 A / 0-400.0 A). In addition the built-in universal power-supply AC/DC 24-240 V makes it even more versatile. 

With its 4 digit, 14 mm high display, Digital Panel meters of MINIPAN 350 V- series allow the accurate display of different values in the range -1999 ... +9999.Only 3 designs cover the measuring of DC voltage and current, AC voltage and current and temperature with Pt 100- sensors (RTD). The display can be easily programmed by the customer (e.g. input 0-10 V --> display 0-350.0 ms or AC 0-1 A ---> 0- 400.0 AWith the built-in universal power supply AC/DC 24-240 V it is especially versatile. 

You found a device in that meets your requirements and you want to install it in a control panel or in the door of a control cabinet?With the installation frame of the ER series, this is possible for all ZIEHL devices in housings V4, V6 and V8 (width 70/105/140 mm).Enclosed by a high-quality frame made of anodized aluminum, all displays can be read outside the control cabinet. Switches, buttons and joystick can be operated. 

Undervoltage monitor for threephase networks without N for monitoring on voltage failure. The voltage is being measured between phases and an artificial neutral point. At symmetrical decrease of the voltage to approx. 50% of the nominal value or in case of failure of a phase the integrated relay (1 change-over contact) releases with a delay ofapprox. 1s. With engines runningon on 2 phases, so much back voltage can be produced that the failure of a phase may be not detected. The SW31K is available for measuring voltages AC 400 V and AC 690 V. As supply voltage in the standard version AC 230 V is needed.ApplicationMonitoring of three-phase networks on loss of a phasemonitoring of fuses

For currents >5A current monitors require a current transformer with secondary 1 or 5 A and a rated capacity of 1.5 VA. The primary rated current must be appropriate to the max. expected current (fuse). Tube ore wound current transformers can be used.For primary rated currents of 60 to 500 A we recommend using AS tube current transformers, suitable for the Cu-rail of 30 x 10 mm or 2 x 20 x 10 mm or round conductor of 28 mm. The transformers have Class 1 accuracy and a voltage resistance of up to 800 V. When ordering, please indicate desired  primary and secondary rated current. 

The automatic start-up system for woodworking machines is a control unit that has been specially developed for the efficient control of extraction systems. Its main function is to monitor the current flow in the supply lines of several machines and to control the extraction system accordingly. Detailed description of the functionality:Current detection: The automatic start-up system is equipped with current relays that monitor the current flow in the supply lines of the machines. These relays are configured in an OR circuit with up to eight inputs. As soon as a current of more than 1 ampere flows through one of the connected current transformers, the built-in relay picks up and activates the extraction system.Automatic control: If at least one machine is switched on and draws current, the extraction system is activated automatically. This ensures that dust and chips are extracted immediately, keeping the working environment clean and safe.Delayed switch-off: As soon as all machines are switched off and no more electricity is flowing, the relay drops out with a delay of around 10 seconds. This delay time allows the extraction system to remove any remaining particles from the air before it is switched off. Typical application: In a joinery that operates several woodworking machines such as saws, planers and routers, the automatic start-up system is installed centrally in the control cabinet. The current transformers are connected to the supply lines of the individual machines. When the carpenter switches on a machine, the automatic start-up system detects the current flow and activates the central extraction system. This ensures that dust and chips produced during woodworking are extracted immediately. As soon as the work is finished and all machines are switched off, the extraction system remains active for a short time to remove the remaining particles before it switches off automatically. This automation not only improves the efficiency of the extraction system, but also contributes to safety and cleanliness in the workplace.8 inputsOR-evaluationrelay picks up if at least 1 input is activatedConnection of current transformers STWA1 or STWA1Hoperating value approx. 1 Aturn-off delay approx. 10 snot necessary inputs remain open 

For currents >5A current monitors require a current transformer with secondary 1 or 5 A and a rated capacity of min. 1,5 VA. The primary rated current must be appropriate to the max. expected current (fuse). Tube or wound current transformers can be used. We recommend the use of WS tube current transformers for primary rated currents of 5 to 30 A.The transformers have a class 1 accuracy and a voltage resistance of up to 800 V.When ordering, please indicate desired primary and secondary rated current. 

The current transformers STWA3D for use with residual current monitor RCM1000V are available with 4 different inside diameters. STWA3D20-70 can be snapped on a DIN-rail, vertically or horizontally or be fixed with screws. The Bracket for mounting is included. STWA3D125 can only be mounted with screws. 

With its 4 digit, 14 mm high display, Digital Panelmeters of MINIPAN 352V- series allow the accurate display of different values in the range -1999 ... +9999. Measuring inputs AC (True RMS), DC current and voltage and measuring of restistance and of temperatures with various sensors are combined in one instrument. Two programmable switching points allow applications as limit-switch or 2- or 3-point controller.With EasyLimit the switching points can be set easily. Other parameters are blocked and thus protected from unindended manipulation. With its analog output (option) it is in addition a measuringtransducer.The display can be easily programmed by the user (e.g. input DC 4-20 mA / display 0-350.0 m/s or 0...200 O / 0...3000 mm or AC 0-5 A / 0-400.0 A). In addition the built-in universal power-supply AC/DC 24-240V makes it even more versatile. 

Relays for 3-phase networks type PSSW1 monitor 3-phase networks for phase-sequence, asymmetry and over- and undervoltage.ApplicationsMonitoring of 3-phase-networks at heat pumps, compressors or at machines at building sites.FunctionsOver- and undervoltage, adjustable ± 2-20 % (common)Asymmetry adjustable 5-15%Phase lossPhase sequenceSwitching delay adjustable 0,1-12 s (for voltage and asymmetry)Bifrequential measuring input 50/60 HzDisplays (4 LEDs for)Over-/undervoltageAsymmetryPhase-sequence/lossState of relay