The Model 553 Re-Acceleration Relay is designed to take the place of a voltage sensing relay and two time delay relays. When voltage is applied to the Model 553, and the external start switch is closed, the adjustable on-delay time begins. After the delay period, the contacts will close.
If the line voltage drops below 90 volts, the contacts open and the true-off delay begins. If the voltage rises above 102 volts before the true-off delay has elapsed, the contact will re-close.
If voltage is not restored to 102 volts before the true-off delay time period ends, the contacts will remain open until the external start switch is closed.
| Model | 553 | ||||
Versions | - 01 | - 02 | - 03 | -04 | |
| Nominal Voltage | 120VAC 60 Hz | ||||
| Trip Point Drop Out | 90VAC | ||||
| Trip Point Pick Up | 102VAC | ||||
| On Delay (Sec) | 1 - 30 | 1 - 120 | 0.1- 40 | 0.5 - 1.0 | |
| True Off Delay (Sec) | 1-10 | 1-10 | 1-10 | 0.1-2.0 | |
| Power Consumption | 5W typical | ||||
| Transient Protection | 2500VRMS for 10 msec | ||||
| Repeat Accuracy | ±0.5% | ||||
| Response Time | 100 msec | ||||
| Dead Band | ±2% | ||||
| Contact Rating | 10A at 120VAC resistive | ||||
| Expected Relay Life | Mech: 10 million operations Elec: 100,000 operations at rated load | ||||
| Operating Temp | +14º to +122º F | ||||
| Humidity Tolerance | 0-97% w/o condensation | ||||
| Enclosure Material | Polycarbonate | ||||
| Mounting | 8-pin socket (*not included) | ||||
| Weight | 10.5 oz. | ||||
| Agency Approvals | CSA | No | No | No | |
*order 8-pin socket number 51X120
