GE Multilin | SR489 | 489-P1-HI-A20-E | Generator Management Relay
The GE 489-P1-HI-A20-E — a generator management relay you will wish you had on the shelf when the old one fails. Time Delay: 0.2 to 120.0 s in steps of 0.1 | Pickup Accuracy: See power metering | Timing Accuracy: ±100 ms or ±0.5% of total time. Physical stock, not virtual inventory. Ships within 24 hours.
Technical Specifications
| 489 Generator Management Relay | is a microprocessor-based relay designed for the protection and management of synchronous and induction generators. |
|---|---|
| Pick-up Level | 0.02 to 0.99 ´ rated MW |
| Time Delay | 0.2 to 120.0 s in steps of 0.1 |
| Pickup Accuracy | See power metering |
| Timing Accuracy | ±100 ms or ±0.5% of total time |
| Elements | Trip and Alarm |
| Blocking Signals | Low power and low voltage if open delta |
| Pickup Level | 2.5 to 300.0 W secondary in steps of 0.1 with adjustable impedance offset 1.0 to 300.0 W secondary in steps of 0.1 |
| Pickup Levels | 0.1 to 500.0 W secondary in steps of 0.1 50 to 85° |
| Block From Online | 0 to 5000 s in steps of 1 |
| Shipping Box | 12”´11”´10” (W ´ H ´ D) 30.5cm ´ 27.9cm ´ 25.4cm |
| Shipping Weight | 17 lbs Max / 7.7 kg |
| Manufacturer | GE |
| Model / SKU | 489-P1-HI-A20-E |
Ships within 24 hours | 12-Month Warranty | Worldwide Delivery
Why the GE 489-P1-HI-A20-E Matters for Your Operation
In pharmaceutical, every component in your control system has a specific job — and when one fails, the ripple effects can shut down an entire production line. The GE 489-P1-HI-A20-E is a generator management relay that keeps your sterile manufacturing and clean-in-place systems running without interruption.
Here is what this module actually does. pick-up level: 0.02 to 0.99 ´ rated MW; time delay: 0.2 to 120.0 s in steps of 0.1; pickup accuracy: See power metering; timing accuracy: ±100 ms or ±0.5% of total time. These are not generic specifications — they determine whether this module will work in your specific GE system. We have seen too many cases where a maintenance team ordered a replacement only to find it was the wrong revision or configuration. That is why we test every 489-P1-HI-A20-E on a live GE rack before shipping — full signal injection across every channel, not just a visual check.
Installation matters too. The most common cause of DOA reports is not a defective module — it is bent backplane pins from forcing a module in at the wrong angle. Take your time lining up the guides. Apply even pressure. If it does not slide in smoothly, stop and check the alignment. Always wear a grounded wrist strap — static discharge from removing a fleece jacket in a dry production suite can exceed 15,000 volts, destroying sensitive input protection diodes instantly.
Think about your sparing strategy. A single GE 489-P1-HI-A20-E costs a fraction of what one hour of unplanned downtime costs in pharmaceutical. We ship replacements within 24 hours from Shenzhen — but even 24 hours is too long if you are losing production. For critical applications, keep one cold spare on your shelf.
Compatible Parts — Same System
These modules share the same system family as the 489-P1-HI-A20-E. Commonly ordered together for complete rack builds or spare parts kits.
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