CSA and UL
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261-ST-24
The Model 261 series Alternating Relay is designed for duplex pumping systems where it is desirable to equalize pump run time. The solid-state alternating circuit drives an internal electromechanical relay. A continuous power source and control switch are required. The control switch (float, pressure or other isolated contact) is connected between the L1 terminal and the control terminal. Each time the control switch is opened the output contacts will change states. Indicator lights on the case show the internal relay status. On the optional toggle switch versions, the toggle switch is set to the ALTERNATE position. Setting the switch to Load 1 or Load 2 will lock the relay in position, preventing alternation. -
261-ST-240
The Model 261 series Alternating Relay is designed for duplex pumping systems where it is desirable to equalize pump run time. The solid-state alternating circuit drives an internal electromechanical relay. A continuous power source and control switch are required. The control switch (float, pressure or other isolated contact) is connected between the L1 terminal and the control terminal. Each time the control switch is opened the output contacts will change states. Indicator lights on the case show the internal relay status. On the optional toggle switch versions, the toggle switch is set to the ALTERNATE position. Setting the switch to Load 1 or Load 2 will lock the relay in position, preventing alternation. -
273-5-120
The Model 273 Single Phase Current Monitor is a single set-point sensor. It can be used as either an over current or under current sensor, depending on the contacts used. This device can directly monitor AC currents in the range of 0.5 to 5 amps: or 2 to 10 amps, 50 to 400 Hz. Matching transformers are available to extend the use of the monitor to most any range. The current being monitored can be of any voltage, up to the rating of the socket. An LED indicator is provided to show when the relay is energized. The Model 273 is available for either 24 VAC or 120 VAC supply voltages.Model 273-5 is UL Recognized and CSA Certified. All versions use a standard 8-pin socket.
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273-5-24
The Model 273 Single Phase Current Monitor is a single set-point sensor. It can be used as either an over current or under current sensor, depending on the contacts used. This device can directly monitor AC currents in the range of 0.5 to 5 amps: or 2 to 10 amps, 50 to 400 Hz. Matching transformers are available to extend the use of the monitor to most any range. The current being monitored can be of any voltage, up to the rating of the socket. An LED indicator is provided to show when the relay is energized. The Model 273 is available for either 24 VAC or 120 VAC supply voltages.Model 273-5 is UL Recognized and CSA Certified. All versions use a standard 8-pin socket.
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276C
The Model 276C Current-Canceling Transformer monitors two of the three phases, and cancels the effect of the current signal in the third phase, which would otherwise cause a phase shift error. The Model 276C accepts input directly or from two standard current transformers (CTs), corrects for the third leg, and provides a single current output to the controller.The Model 276C is UL Recognized and CSA Certified. For use with Models 421 or 422 in 3-phase applications.
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280-110DC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
280-120AC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
280-12DC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
280-240AC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
280-24AC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
280-24DC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
281-110DC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
281-120AC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
281-12DC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
281-240AC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin. -
281-24AC
The Model 280 and 281 General Purpose Plug-In Relays are heavy duty, high quality relays available at a competitive price. UL Recognized and CSA approved, the Model 280 and 281 have a long life of over 10 million mechanical operations. Model 280 and 281 relays are available in a variety of AC and DC voltages. Mounting configurations are standard 8- and 11-pin.