Schneider Electric LV429170 MicroLogic 2.2 M 100A 3P 3D Electronic Trip Unit for ComPact NSX100/160/250

Description

The Schneider Electric LV429170 is a MicroLogic 2.2 M electronic trip unit rated at 100A, designed for ComPact NSX100, NSX160 and NSX250 circuit breakers. This 100A electronic trip unit is configured for 3-pole, 3D protection and is specifically intended for motor protection applications.

The LV429170 MicroLogic 2.2 M provides LSOI electronic protection, combining long-time overload protection, short-time short-circuit protection and instantaneous short-circuit protection. The adjustable long-time pickup Ir can be set from 50A to 100A, providing flexibility when configuring motor feeder protection.

For short-circuit protection, the MicroLogic 2.2 M 100A trip unit provides an adjustable short-time pickup Isd from 5 to 13 × Ir. The short-time delay is fixed at 0.01 seconds, while the instantaneous pickup is fixed at 1500A. This combination allows the trip unit to provide coordinated protection for compatible motor circuits.

A key feature of the Schneider LV429170 is its selectable motor tripping classes 5, 10 and 20. These settings allow the protection characteristics to be matched to different motor starting conditions. Schneider documentation also specifies phase-unbalance protection, adding motor-specific protection functionality beyond basic overload and short-circuit protection.

The MicroLogic 2.2 M operates on AC systems at 50/60Hz and has a rated operational voltage of 690V AC. The electronic trip unit includes thermal memory, with a specified memory period of approximately 20 minutes before and after tripping, helping account for the thermal state of the protected motor circuit.

The LV429170 trip unit is an accessory/component for compatible ComPact NSX circuit breakers rather than a standalone circuit breaker. Correct compatibility with the specific NSX frame, circuit-breaker rating and installation configuration should be verified before replacement or installation.

Lifecycle status: Schneider Electric lists LV429170 as discontinued, although the discontinuation date varies by region. Schneider Australia lists 27 June 2024, while Schneider UAE lists 2 May 2023. Several Schneider regional pages identify C1032M100 as the recommended replacement: a MicroLogic 2.2M, 100A, 3P electronic trip unit for ComPacT NSX100/160/250. Schneider Egypt and Indonesia, however, indicate that the reference has not been replaced. Therefore, the exact replacement and availability should be verified for the intended market.