Overview
The Allen-Bradley 193-T1AB32 is a compact, reliable thermal overload relay designed to protect motors and machinery from damaging overcurrent conditions. This bimetallic overload relay is ambient temperature compensated, ensuring that the tripping characteristic of the relay remains constant over an ambient temperature range of -20…+60 °C. It features automatic and manual reset, Class 10 tripping, is adjustable from 2.3 to 3.2 AMPS and has phase loss protection. This T1-series unit is a proven choice for motor branch circuits and soft-starter applications across industrial automation environments.
Key Features
- Ambient temperature compensation for stable tripping characteristics across -20 to 60°C
- Class 10 tripping with automatic/manual reset capability
- Differential mechanism for high sensitivity to phase loss conditions; can protect DC-motor and variable frequency drive applications
- Adjustable current range 2.3 to 3.2 AMPS
- Compact bimetallic strip design—no moving parts to stick or jam
- Direct mounting to 100-C09, 100-C12, 100-C16 or 100-C25 contactors
Technical Specifications
The 193-T1AB32 delivers dependable motor protection with minimal panel footprint. Key performance metrics include:
- Ambient temperature range: –20 to +60°C
- Adjustable current range: 2.3–3.2 A
- Tripping class: Class 10 / 10A
- Reset: Automatic and manual
- Isolated voltage rating: 690 VAC
- Mechanism: Bimetallic thermal strip
- Auxiliary contacts: 1 normally open (N.O.), 1 normally closed (N.C.)
- Power consumption: 6 W
Typical Applications
- Three-phase motor protection in motor control centers and panel assemblies
- Machine tool spindle and pump motor circuits
- General industrial machinery requiring Class 10 overload protection
- Soft-starter and variable-frequency drive (VFD) motor branch protection
- OEM equipment where compact thermal relays are preferred over electronic alternatives
Compatibility & Replacements
Compatible With
- Bulletin 100-C Contactors and Bulletin 104-C Reversing Contactors
- 100-C09, 100-C12, 100-C16, 100-C25 contactor models
- Three-phase AC motor circuits
- Variable-frequency drive (VFD) applications
- DC-motor applications
Replaces / Drop-In Replacement For
The 193-T1AB32 is the standard catalog designation for the T1-series 2.3–3.2A IEC bimetallic thermal overload relay. Verify compatibility with your system integrator before ordering to ensure contactor frame match and application requirements are met.
Works With
- Allen-Bradley Bulletin 100 contactors (standard industrial control)
- Manual motor starters with thermal overload protection
- Soft starters and reduced-voltage motor controllers
- Any three-phase or DC motor control scheme requiring Class 10 protection
