Overview
The Telemecanique LB1-LC03M53 is a thermal overload protection module engineered for use with Telemecanique/Schneider Electric Integral 32 self-protected combination motor controllers. This relay provides Class 10 overload protection with ambient temperature compensation, making it suitable for a wide range of industrial motor control applications requiring reliable overcurrent and thermal protection.
Key Features
- Thermal overload protection with adjustable trip range (23-32A)
- Class 10 ambient-compensated design for stable protection across operating conditions
- Compact integral module compatible with LD1LC, LD4LC, and LD5LC motor starters
- 575VAC rated for industrial motor circuit protection
- Lightweight, rugged construction suitable for panel or direct-mount installation
- Proven Schneider Electric/Telemecanique reliability and IEC standards compliance
Technical Specifications
| Part Number | LB1-LC03M53 / LB1LC03M53 |
| Manufacturer | Telemecanique / Schneider Electric |
| Product Type | Thermal Overload Relay Module |
| Rated Voltage | 575VAC |
| Amperage Range | 23-32A |
| Thermal Protection Class | Class 10 (Ambient Compensated) |
| Compatible Controller Ratings | 32A Integral Starters |
| Weight | 1.0 lb |
| Series | Integral 32 Self-Protected Combination Motor Controllers |
| Standards / Certifications | IEC, UL, CSA, ASTA, DEMKO, NEMKO, SEMKO, VDE |
| Status | Discontinued by Manufacturer |
| Condition | Used |
Typical Applications
- Three-phase AC motor circuit overload protection in industrial machinery
- HVAC and ventilation fan motor control systems
- Pump drive protection in commercial and industrial water systems
- Conveyor and material handling equipment motor protection
- Manufacturing floor equipment requiring reliable overcurrent limiting
- Retrofit and repair of existing Integral 32 motor control panels
Compatibility & Replacements
Compatible With
- Telemecanique LD1-LC030 series motor starters
- Telemecanique LD4-LC030 series motor starters
- Telemecanique LD5-LC030 series motor starters
- Telemecanique Integral 32 self-protected combination motor controllers
- Schneider Electric SQUARE D Integral motor control systems
Replaces / Drop-In Replacement For
The LB1-LC03M53 is a direct replacement for OEM Telemecanique thermal overload modules in the LB1LC03M series rated for 23-32A operation. Due to this unit’s discontinued status, verify compatibility with your system integrator or controls engineer before ordering to ensure proper application and electrical rating alignment.
Works With
- Telemecanique INTEGRAL combination motor controller systems
- IEC 60947 motor control standards
- UL 508 industrial control panel designs
- North American and European industrial motor control protocols
