Overview
The Telemecanique LD4 LC.30.H5 is an integral 32A manual/direct-on-line motor starter designed for reliable AC motor control in industrial environments. This unit combines a contactor with a built-in thermal overload relay in a compact, rugged enclosure. Built by Telemecanique—now part of the Schneider Electric group—this starter is widely deployed in manufacturing lines, process control systems, and infrastructure applications requiring simple, dependable motor protection and control.
Key Features
- 32A rated current with 690V insulation class
- 8kV impulse withstand (Uimp) for surge protection
- Integral thermal overload relay for motor protection
- Manual/direct-on-line (DOL) operation with low control complexity
- Compact, space-efficient mounting for tight panel layouts
- Proven industrial-grade construction for harsh environments
Technical Specifications
This starter is sized for motors in the 15–22 kW range (depending on voltage and duty cycle). The integral overload relay provides automatic motor shutdown on overcurrent, preventing thermal damage and unplanned downtime. The 690V insulation rating supports three-phase industrial mains, and the 8kV impulse rating ensures compatibility with systems subject to switching transients or lightning-related surges.
Typical Applications
- Pump and compressor motor control
- Fan and blower drive systems
- Machine tool motor starting and overload protection
- Batch process and infrastructure motor circuits
- Fixed-speed AC motor applications without variable frequency requirements
Compatibility & Replacements
Compatible With
- Three-phase AC mains up to 690V
- Telemecanique LB1 series thermal overload relays
- Standard industrial control panel enclosures
- Fixed auxiliary contacts for circuit signaling and interlocks
Replaces / Drop-In Replacement For
- Telemecanique LD4LC030 (base contactor variant)
- Telemecanique LD4-LC030FC-H5 (similar 32A rating)
Works With
- Manual control circuits and push-button stations
- Telemecanique LB1-LC series overload relay modules
- Standard industrial electrical safety standards (IEC 60947-4-1)
