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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | ATC Diversified |
| Manufacturer Product Number | VBA1189 |
| Description | Voltage Monitor Relay; Voltage Band (Window); 24/28 VDC; 0.5 s; DPDT |
| Datasheet | Download Datasheet |
The ATC Diversified VBA1189 is a single-phase voltage band monitor for 24/28 V DC supplies. Its relay stays energized while the voltage is inside the band and drops out when it goes above or below it.
Trip points: low voltage Pick-up 20-26 V DC adjustable, factory set 22 V DC; drop-out 17-23 V DC (tracks 3 V below the pick-up); high voltage Drop-out 29-35 V DC adjustable, factory set 33 V DC; pick-up 26-32 V DC (tracks 3 V below the drop-out). Adjustment: adjustable (factory set). Trip delay: 0.5 s. Pick-up delay: 100 ms. Reset: automatic.
Output: 2 Form C (DPDT), 5 A resistive at 240 V AC or 24 V DC. Mounting: surface mount, screw Terminal (12 x #8-32). It operates from -28 to +65 °C and stores from -45 to +85 °C.
| Category | |
| Manufacturer | ATC Diversified |
| Model | VBA |
| Monitoring Function | Voltage Band (Window) |
| Input Voltage | 24/28 VDC |
| Pickup Voltage Adjustment | Adjustable (factory set) |
| Low Voltage Trip / Reset | Pick-up 20...26V DC adjustable, factory set 22 V DC; drop-out 17...23V DC (tracks 3 V below the pick-up) |
| High Voltage Trip / Reset | Drop-out 29...35V DC adjustable, factory set 33 V DC; pick-up 26...32V DC (tracks 3 V below the drop-out) |
| Pickup Delay | 100 ms |
| Trip Delay | 0.5 s |
| Reset Method | Automatic |
| Contact Configuration | 2 Form C (DPDT) |
| Number of Poles | 2 |
| Output Rating | 5 A resistive at 240 V AC or 24 V DC |
| Mounting Type | Surface Mount |
| Termination Style | Screw Terminal (12 x #8-32) |
| Dimensions | 4.00 x 3.25 x 3.00 in (Style E) |
| Operating Temperature (Storage) | -28...+65 °C (-45...+85 °C) |