The GE 12NAA1982A is a high-reliability Out-of-Step Auxiliary Relay designed for legacy GE protective-relay systems used in transmission, distribution, and industrial power networks. Built under the NAA-series, this relay provides dependable auxiliary logic, contact multiplication, and out-of-step signaling to support grid-stability protection schemes.
With rugged electromechanical construction, the unit delivers consistent performance in demanding environments such as substations, switchyards, and large industrial control rooms.
📌 Key Features
✔ Out-of-Step (OOS) Protection Support
Designed to work with GE impedance/distance relays to detect and signal power-system instability events.
✔ 125 VDC Auxiliary Control
Provides fast and reliable coil operation for protection and control circuits.
✔ Multiple Overcurrent Calibrations
O.C. Unit Calibrations: 4 / 6.3 / 10 / 16 A
Allows flexible deployment in various control schemes.
✔ Legacy GE NAA-Series Construction
Durable electromechanical design suitable for long-term operation and easy field servicing.
⚙️ Specifications
| Attribute | Value |
|---|---|
| Model | 12NAA1982A |
| Type | NAA Auxiliary Relay |
| Function | Out-of-Step Auxiliary (OOS) |
| Control Voltage | 125 VDC |
| Frequency | 25/60 CY |
| Series | GE NAA Special Auxiliary Relays |
| Documentation | GEK-44063, GEF-4367 |
| Status | Discontinued / Legacy Unit |
🏭 Applications
Ideal for:
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Transmission & distribution protection panels
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Utility substations
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Industrial control and automation systems
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Legacy electromechanical relay banks
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Replacement or maintenance of older GE systems
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Emergency spares for OOS logic circuits
⭐ Why Buyers Choose This Relay
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Hard-to-find model from GE’s discontinued protection line
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Essential for maintaining legacy control and protection systems
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Trusted electromechanical construction with long operational life
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Suitable for utilities, industrial plants, engineering firms, and collectors
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