GE 12NAA1982A Out-of-Step Auxiliary Relay

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
🏭 Applications
Ideal for:
Transmission & distribution protection panels
Transmission & distribution protection panels
Utility substations
Utility substations
Industrial control and automation systems
Industrial control and automation systems
Legacy electromechanical relay banks
Legacy electromechanical relay banks
Replacement or maintenance of older GE systems
Replacement or maintenance of older GE systems
Emergency spares for OOS logic circuits
Emergency spares for OOS logic circuits
⭐ Why Buyers Choose This Relay
Hard-to-find model from GE’s discontinued protection line
Hard-to-find model from GE’s discontinued protection line
Essential for maintaining legacy control and protection systems
Essential for maintaining legacy control and protection systems
Trusted electromechanical construction with long operational life
Trusted electromechanical construction with long operational life
Suitable for utilities, industrial plants, engineering firms, and collectors
Suitable for utilities, industrial plants, engineering firms, and collectors

Weight: 25 lbs
Dimensions: 15 × 8 × 8 in