Product Description
Description: Monitors • Current Monitor Relays • Function: 3-Phase/Over Current • Input Voltage: 24 VAC • Input Voltage Range: 20-28V • Reset : Manual • Current Range : 1 to 5 amps • Power Consumption : 3W max. • Frequency Range : 50 to 400Hz • Reset : Automatic or Manual • Contact Rating : SPDT 10A at 240VAC resistive
| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Function | 3-Phase/Over Current |
| Input Voltage | 24 VAC |
| Input Voltage Range | 20-28V |
| Reset | Manual |
| Current Range | 1 to 5 amps |
| Power Consumption | 3W max. |
| Frequency Range | 50 to 400Hz |
| Dead Band | 4% max. |
| Trip Delay | 0.2 to 20 seconds |
| Reset | Automatic or Manual |
| Contact Rating | SPDT 10A at 240VAC resistive |
| Expected Relay Life | Mech: 10 million operations Elec: 100,000 ops at rated load |
| Operating Temperature | - 20o to +131o F |
| Enclosure Material | ABS plastic |
| Weight | 1 lb. 4.5 oz. |
| Series Features |
| MODEL 274 3-Phase Current Monitor |
| Series Description: The 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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