Schneider Electric LH4N125RT7 Three Phase Soft Starter

Description:

The Telemecanique LH4N125RT7 soft starter is a solid-state motor starter rated for 22 A at 440–480 VAC, used to provide controlled starting and stopping of three-phase asynchronous motors. Commonly installed in pumps, conveyors, compressors, fans, HVAC systems, and industrial machinery where reduced mechanical stress and lower inrush current are required during motor startup. Maintenance teams, OEMs, and system integrators use this soft starter for equipment replacement, retrofit projects, and motor control system upgrades.

Applications:

The LH4N125RT7 soft starter is designed to minimize mechanical shock and electrical stress during motor acceleration and deceleration in industrial automation systems. It is widely used in manufacturing facilities, water treatment plants, material handling equipment, process automation, HVAC installations, and pumping applications where smooth motor starting improves equipment reliability and extends service life.

Technical Specifications:

• Manufacturer Part Number (MPN): LH4N125RT7
• Manufacturer: Telemecanique (Schneider Electric)
• Product Type: Solid-State Soft Starter
• Series: LH4N1
• Rated Operating Current: 22 A
• Rated Supply Voltage: 440–480 VAC, 3-Phase
• Motor Power: Up to 15 HP (approximately 11 kW)
• Function: Soft starting and stopping of asynchronous motors
• Starting Method: Voltage Ramp
• Starting Time: Adjustable 1–5 seconds
• Supply Frequency: 50/60 Hz
• Integrated Bypass: Yes
• Mounting Style: Panel Mount
• Compatible Systems: Three-phase asynchronous motor control systems
• Replacement Type: OEM Direct Replacement

Common Replacements:

• Schneider Electric ATS01N125FT Soft Starter
• Telemecanique LH4N125RT7 Soft Starter
• Schneider Electric Altistart 01 Soft Starter