Schneider C166TM160 Trip unit TM160D, ComPacT NSX160, 4P, 3D (neutral not protec

The Schneider Electric C166TM160 is a TM160D thermomagnetic trip unit designed for ComPacT NSX160 circuit breakers, rated at 160 A at 40°C. Configured for 4-pole use with 3-pole protection (neutral not protected), it provides overload and short-circuit protection for AC power distribution applications up to 690 V AC.

Technical specifications:

• Commercial reference: C166TM160
• Manufacturer: Schneider Electric
• EAN:
• Series / range: ComPacT NSX100...250 new generation
• Product type: Trip unit
• Trip unit name: TM-D
• Trip unit technology: Thermomagnetic
• Compatible range: ComPacT new generation NSX160
• Number of poles: 4P
• Protected poles: 3D (neutral not protected)
• Neutral conductor position: Left
• Trip unit rating: 160 A at 40°C
• Rated voltage [Ue]: 690 V AC 50/60 Hz
• Network type: AC
• Network frequency: 50/60 Hz
• Mounting mode: Fixed
• Long-time pick-up [Ir] adjustment: Adjustable, 0.7...1 x In
• Long-time delay [tr]: Fixed, 120...400 s at 1.5 x In; 15 s at 6 x Ir
• Instantaneous pick-up [Ii]: Fixed, 1250 A
• Neutral protection: None (3D)
• Protection functions: L (overload/thermal), I (short-circuit)
• IP protection rating: IP40 per IEC 60529
• Electric shock protection class: Class II
• Pollution degree: 3 per IEC 60947-1
• Operating temperature: -25...70°C
• Storage temperature: -50...85°C
• Standard: EN/IEC 60947-2
• Weight: 494 g

Features and benefits:

• Thermomagnetic technology provides reliable overload (thermal) and short-circuit (magnetic) protection in a single unit.
• Adjustable long-time pick-up (0.7...1 x In) allows current setting to match the protected circuit requirements.
• 4P configuration with 3-pole protection keeps the neutral conductor unprotected, suitable for TN-S networks where the neutral is not switched.
• Rated up to 690 V AC, suitable for industrial and commercial power distribution systems.
• IP40 enclosure and Class II insulation provide protection in polluted industrial environments (pollution degree 3).
• Wide operating temperature range (-25...70°C) supports installation in demanding ambient conditions.

Applications:

• Industrial power distribution panels and switchboards requiring 4-pole circuit protection.
• Commercial electrical installations where neutral switching is not required.
• Motor feeder and outgoing circuit protection in medium-voltage distribution assemblies.
• Replacement or upgrade trip unit for existing ComPacT NSX160 circuit breaker frames.

Compliant with EN/IEC 60947-2. Part of the Schneider Electric ComPacT NSX new generation range.

Also known as: Schneider C166TM160, Schneider Electric C166TM160, NSX160 trip unit, TM160D thermomagnetic trip unit.