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273-10-120
Single Phase Over/Under Current Monitor2 to 10ASelect optionsThe 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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273-10-24
Single Phase Over/Under Current Monitor2 to 10ASelect optionsThe 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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273-5-120
Single Phase Over/Under Current Monitor0.5 - 5ASelect optionsThe 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
Single Phase Over/Under Current Monitor0.5 - 5ASelect optionsThe 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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2734
Over Current Sensitive Relay2 - 20A/1-10A/0.5-5ASelect optionsThe Model 2734 Current Sensitive Relay monitors a single-phase AC current for an over-current condition. A top-mounted current transformer (CT) provides complete isolation from the control voltage as well as easy installation. Operation begins when the current being monitored rises to 10% of the trip setting, which initiates the start-up delay. When the delay expires, over-current sensing begins. In the AUTO mode, the Model 2734 resets when current drops below the trip setting. In the MANUAL mode, the unit must be reset by momentarily switching to the AUTO mode, and back, after the current fault is cleared. The TRIPPED LED indicates the output relay status. Current must drop below 10% of the trip setting for the start-up delay to restart. The standard model operates in a non-failsafe mode; if control power is lost, over-current detection is lost. A failsafe option is available, fixed or switchable. An adjustable dead band option is also available.
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274-5-120-A
3-Phase Over Current Monitor1 - 5ASelect optionsThe Model 274 3-Phase Current Monitor is designed to monitor all legs of a 3-phase line, and can also be used to monitor three individual single-phase lines. The output relay will energize on an over-current condition on any one of the 3 monitored lines. Two indicator lamps are provided to show when an over-current condition exists and when the output relay is tripped. An adjustable trip delay of 0.2 to 20 seconds is provided to reduce nuisance tripping. Matching current transformers are available to extend the range of the device to most any range up to 1,000 amps. The Model 274 is offered in either manual or automatic reset models. An external power supply of 24, 120 or 230 VAC powers the device.
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274-5-120-M
3-Phase Over Current Monitor1 - 5ASelect optionsThe Model 274 3-Phase Current Monitor is designed to monitor all legs of a 3-phase line, and can also be used to monitor three individual single-phase lines. The output relay will energize on an over-current condition on any one of the 3 monitored lines. Two indicator lamps are provided to show when an over-current condition exists and when the output relay is tripped. An adjustable trip delay of 0.2 to 20 seconds is provided to reduce nuisance tripping. Matching current transformers are available to extend the range of the device to most any range up to 1,000 amps.
The Model 274 is offered in either manual or automatic reset models. An external power supply of 24, 120 or 230 VAC powers the device.
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274-5-24-A
3-Phase Over Current Monitor1 - 5ASelect optionsThe Model 274 3-Phase Current Monitor is designed to monitor all legs of a 3-phase line, and can also be used to monitor three individual single-phase lines. The output relay will energize on an over-current condition on any one of the 3 monitored lines. Two indicator lamps are provided to show when an over-current condition exists and when the output relay is tripped. An adjustable trip delay of 0.2 to 20 seconds is provided to reduce nuisance tripping. Matching current transformers are available to extend the range of the device to most any range up to 1,000 amps. The Model 274 is offered in either manual or automatic reset models. An external power supply of 24, 120 or 230 VAC powers the device.
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274-5-24-M
3-Phase Over Current Monitor1 - 5ASelect optionsThe Model 274 3-Phase Current Monitor is designed to monitor all legs of a 3-phase line, and can also be used to monitor three individual single-phase lines. The output relay will energize on an over-current condition on any one of the 3 monitored lines. Two indicator lamps are provided to show when an over-current condition exists and when the output relay is tripped. An adjustable trip delay of 0.2 to 20 seconds is provided to reduce nuisance tripping. Matching current transformers are available to extend the range of the device to most any range up to 1,000 amps.
The Model 274 is offered in either manual or automatic reset models. An external power supply of 24, 120 or 230 VAC powers the device.
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274-5-240-A
3-Phase Over Current Monitor1 - 5ASelect optionsThe Model 274 3-Phase Current Monitor is designed to monitor all legs of a 3-phase line, and can also be used to monitor three individual single-phase lines. The output relay will energize on an over-current condition on any one of the 3 monitored lines. Two indicator lamps are provided to show when an over-current condition exists and when the output relay is tripped. An adjustable trip delay of 0.2 to 20 seconds is provided to reduce nuisance tripping. Matching current transformers are available to extend the range of the device to most any range up to 1,000 amps. The Model 274 is offered in either manual or automatic reset models. An external power supply of 24, 120 or 230 VAC powers the device.
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274-5-240-M
3-Phase Over Current Monitor1 - 5ASelect optionsThe Model 274 3-Phase Current Monitor is designed to monitor all legs of a 3-phase line, and can also be used to monitor three individual single-phase lines. The output relay will energize on an over-current condition on any one of the 3 monitored lines. Two indicator lamps are provided to show when an over-current condition exists and when the output relay is tripped. An adjustable trip delay of 0.2 to 20 seconds is provided to reduce nuisance tripping. Matching current transformers are available to extend the range of the device to most any range up to 1,000 amps.
The Model 274 is offered in either manual or automatic reset models. An external power supply of 24, 120 or 230 VAC powers the device.
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2742-115
3-Phase Over/Under Current Monitor1 - 5ASelect optionsThe Model 2742 3-Phase Over/Under Current Monitor is designed to monitor the current level of a 3-phase line or to compare the currents of three single-phase lines. The Model 2742 is factory-set as an over-current monitor; that is, if one or more current inputs rises above the trip level, the internal relay will de-energize. Adding a wire between the UNDER CURRENT terminals on the case will cause the Model 2742 to sense a decrease of one or more current inputs. An adjustable trip delay of 0.2 to 20 seconds will prevent nuisance tripping. The current trip point is adjustable from 1 to 5 amps, and matching current transformers are available to extend the current range of the monitor. The Model 2742 will automatically reset when the current fault is corrected. An external manual reset can be added by installing a normally closed switch between the terminals marked RESET.
Engineered and Built in the USA
