Overview
Eaton BA13A is a NEMA A200 thermal overload relay designed for motor overload protection in industrial applications. This Type B Class 20 relay is a 3-pole, starter-mounted device rated 0.25–26.2A with 1NC auxiliary contact and ambient compensation. The bimetallic design delivers consistent inverse time-delay operation across single-phase and three-phase motor circuits.
Key Features
- Ambient compensation standard for temperature-stable operation
- Class 20 to 600 VAC design with inverse time-delay trip
- Test trip device for weld check and high visibility up-front trip indication
- Trip-free reset mechanism
- Bimetallic actuated device with precisely calibrated heaters
- 1NC (1 Normally Closed) auxiliary contact for alarm and monitoring applications
Technical Specifications
The BA13A is rated for 40 to 75°C ambient operation and features threaded terminal connections for NEMA 5 enclosure mounting. This modern block-type, bimetallic design provides Class 20 operation in either single-phase or three-phase applications.
Typical Applications
- NEMA A200, A210, and A250 motor starter installations
- Three-phase and single-phase motor circuits
- Direct circuit connection or current transformer applications on NEMA size 5 and larger motors
- Industrial process control and manufacturing equipment protection
Compatibility & Replacements
Compatible With
- NEMA A200 motor starters (all sizes except 00, 0, 1 —see notes below)
- 600 VAC industrial motor control circuits
- Single-phase and three-phase AC motor applications
- Standard industrial electrical distribution systems rated 600 VAC or less
Replaces / Drop-In Replacement For
- Existing Type B thermal overload relays in A200 configurations
- Note: For B200 Size 00, 0, 1 applications, use BA23A instead of BA13A
Works With
- NEMA A200, A210, A250 motor controllers (all compatible sizes)
- Standard 600 VAC industrial motor circuits
- Thermal overload relay socket assemblies for A200 starters
- Current transformers (for NEMA 5+ applications)
