CNC EL240364 Modular Changeover Switch YCBZ-40, 2-Pole, 40 A, 1-0-2, DIN Rail Mount

This CNC YCBZ-40 modular changeover switch stands out with its robust 40 A rating in a compact 2-module housing, allowing safe manual transfer between two power sources without the bulk of industrial rotary switches. Ideal for residential and light commercial backup power setups, it ensures a clear break between sources thanks to the 1-0-2 (ON-OFF-ON) switching sequence.

Highlights

• 2-pole (2P) configuration for single-phase 230 V AC or phase-to-phase 400 V AC circuits
• Rated current of 40 A, suitable for main/standby power switching and generator transfer
• Three positions: 1-0-2, providing a definite OFF state between the two ON positions
• Compact design: only 2 modules wide (36 mm), mounts on standard 35 mm DIN rail
• High electrical endurance: 10,000 cycles; mechanical endurance: 20,000 cycles
• Wide terminal capacity: accepts solid or stranded conductors from 1 to 25 mm²
• Complies with IEC/EN 60947-3 for low-voltage switchgear

In daily use

During a grid outage, simply move the lever from position 1 (mains) to 0 (off) and then to position 2 (generator). The clear tactile feedback and visible position indication prevent accidental cross-connection. The IP20 terminal protection and operating temperature range of -5 °C to +40 °C make it reliable in typical electrical enclosures. Its 500 V rated insulation voltage and 4 kV impulse withstand voltage provide an extra safety margin against voltage spikes.

Full specifications

• Product type: Modular changeover switch
• Number of poles: 2P
• Rated current (In): 40 A
• Switching positions: 1-0-2 (ON-OFF-ON)
• Rated operational voltage: 230 V AC (single phase) / 400 V AC (phase-to-phase)
• Rated insulation voltage (Ui): 500 V
• Rated impulse withstand voltage (Uimp): 4 kV
• Standard compliance: IEC/EN 60947-3
• Mounting type: 35 mm DIN rail
• Electrical life: 10,000 cycles
• Mechanical life: 20,000 cycles
• Terminal capacity: 1-25 mm² (solid/stranded)
• Operating temperature range: -5 °C to +40 °C
• Storage temperature range: -25 °C to +70 °C
• Protection degree: IP20 (terminals)
• Number of modules: 2 (36 mm width)
• Application: Main/standby power switching, generator transfer

Final note

For installers and panel builders, the YCBZ-40 delivers a dependable, space-saving solution for manual source transfer, backed by CNC's commitment to quality and compliance with international standards.