Product Overview
● The CH3 series modular terminal devices are the latest product line launched by Changshu Switch Manufacturing Co., Ltd. following their independently developed CM3/CM5 molded case circuit breakers and CW3 air circuit breakers. This series serves as an upgraded replacement for the original CH1/CH2 terminal devices, featuring these improvements:
● CH3N/CH3LN 1P+N models retain original dimensions but increase rated current to 40A and breaking capacity to 6kA.
● CH3N/CH3LN 1P+N models support various accessories for industrial multifunctional requirements.
● CH3N/CH3H MCBs allow reverse feed connections.
● CH3N-63 covers rated currents down to 1A with 1P+N configuration and Type D tripping characteristic.
● 63A-frame RCCBs offer selectable residual operating currents (30mA/100mA/300mA), enhancing earth leakage protection.
● Full-series standardized design with universal accessories.
● Optimized ergonomic interface and humanized form factor across all products.
Product Series (4 Categories)
●
GB/T 10963.1 compliant: CH3N-40/63, CH3H-63 MCBs.
- Rated voltage: AC 400V 50/60Hz
- Rated current: 1A–63A
●
GB/T 14048.2 compliant: CH3H-125 MCBs.
- Rated voltage: AC 400V 50/60Hz
- Rated current: 63A–125A
●
GB/T 16917.1 compliant: CH31NN-32, CH31N-40/63, CH31H-63 RCCBs.
- Rated voltage: AC 400V 50/60Hz
- Rated current: 6A–63A
- Residual operating current: 30mA–300mA
●
GB/T 14048.2 compliant: CH31H-125 RCCBs.
- Rated voltage: AC 400V 50/60Hz
- Rated current: 63A–125A
- Residual operating current: 30mA–300mA
●
GB/T 14048.2 compliant: CH3Z-63 DC MCBs.
- Rated voltage: DC 500V
- Rated current: 1A–63A
●
GB/T 14048.3 compliant: CH3G-125 modular isolators.
- Rated voltage: AC 400V 50/60Hz
- Rated current: 32A–125A
All series include isolation function (symbol: 一).*
Standard Service & Installation Conditions
● Ambient temperature: -5℃ to +40℃
● Altitude: ≤2000m
● Relative humidity: ≤50% at +40℃; may reach 90% at +20℃ (special measures required for occasional condensation).
● Pollution degree: Level 2
● Safety class: Class II
● Extended operating range: Ambient temperature -25℃ to +70℃ (refer to temperature-current derating table).