Manual On Load Changeover Switch 3KJ 4-pole, for power distribution - 3KJ0236-4AA20-0AA0

Product Description

Siemens Manual On-Load Changeover Switch – 3KJ0 Series – 3KJ0236-4AA20-0AA0

The Siemens 3KJ0236-4AA20-0AA0 is a SENTRON / SINOVA 3KJ0 series manual on-load changeover switch designed for safe and reliable power source transfer (I–0–II operation) in low-voltage distribution systems. It is widely used in industrial panels, commercial buildings, and backup power systems (DG–mains or dual mains setups) where controlled manual switching between two sources is required.

This model belongs to the 3KJ0 series (200A class, Size 2) and features a 4-pole configuration (3P + Neutral), ensuring complete isolation and safe transfer of all phases and neutral during switching.

It is designed for AC-23A duty, making it suitable for switching inductive and mixed loads such as motors, pumps, HVAC systems, and general industrial distribution circuits under load conditions.

Key Features:

• Siemens SENTRON / SINOVA 3KJ0 changeover switch 

• Manual on-load operation (I–0–II switching) 

• 4-pole (3P + Neutral) configuration 

• Rated current: 200A 

• AC-23A utilization category for industrial load switching 

• Suitable for mains–generator and mains–mains changeover systems 

• High mechanical endurance and robust switching mechanism 

• Compact panel-mounted design with rotary handle operation 

• Break-before-make operation ensures safe source transfer 

• IEC 60947-3 compliant