Schneider C166TM160 Trip Unit TM160D

The C166TM160 Schneider is a TM160D thermal-magnetic trip unit designed for use with ComPacT NSX160 circuit breakers. Configured for 4-pole (3D) installations, it is rated for 160 A at 40 °C, offering reliable protection in low-voltage power distribution systems.

It provides adjustable thermal overload and fixed magnetic short-circuit protection, with a 3D configuration that protects all three phases while leaving the neutral unmonitored—ideal for standard three-phase setups.

Tested to IEC 60947-2 standards, this trip unit ensures safe and consistent performance in industrial and commercial environments.

Technical Specifications

• Model: C166TM160
• Type: Thermal Magnetic Trip Unit TM160D
• Brand: Schneider Electric
• Range: ComPacT NSX New Generation

Power & Performance

• Rated Current: 160 A at 40°C
• Poles: 4P (Four Poles)
• Protected Poles: 3D (Three Protected Poles)
• Neutral Position: Left
• Trip Unit Technology: Thermal-Magnetic
• Protection Functions:
  • L (Thermal): Overload Protection
  • I (Magnetic): Short-Circuit Protection
• Rated Operational Voltage (Ue):
  • 690V AC 50/60Hz
• Network Type: AC
• Network Frequency: 50/60 Hz

Adjustments & Settings

• Long-Time Thermal Protection (Ir): Adjustable
• Adjustment Range: 0.7…1 x In
• Long-Time Delay (tr): Fixed
• Delay Settings:
  • 120…400 seconds at 1.5 x In
  • 15 seconds at 6 x Ir
• Neutral Protection Setting: No protection (3D)
• Instantaneous Magnetic Protection (Ii): Fixed
• Instantaneous Setting: 1250 A
• Earth Leakage Protection: Not included

Build & Design

• Mounting Mode: Fixed
• Trip Unit Rating: 160A
• Compatibility:
  • ComPacT NSX160 Basic Frames

C166TM160 Physical Specifications

• Gross Weight: 494 g

Dimensions:

• Height: 6.5 cm
• Width: 9.5 cm
• Length: 15.0 cm

Environmental Specifications

• Standards: EN/IEC 60947-2
• Shock Protection Class: Class II
• Pollution Degree: 3 (IEC 60947-1)
• IP Degree of Protection: IP40 (IEC 60529)
• Ambient Temperature for Operation: -25°C to +70°C
• Ambient Temperature for Storage: -50°C to +85°C
• Carbon Footprint: 101 kg CO₂-eq (Total Life Cycle)
• Recycled Metal Content: 0%

Key Features & Benefits

✅ Thermal-Magnetic Protection: Ensures reliable overload and short-circuit protection.

✅ Adjustable Thermal Settings: Tailor protection to your system requirements with adjustable long-time pick-up.

✅ Fixed Magnetic Protection: Pre-set for fast reaction to short-circuit events.

✅ Durable Design: Rated for harsh environments with a wide operating temperature range.

✅ Seamless Integration: Specifically designed for use with ComPacT NSX160 circuit breakers and EcoStruxure Power systems.

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