Outline
CH series modular terminal electrical devices primarily include: CH1, CH2 series Miniature Circuit Breakers (MCBs), CH2Z series DC MCBs, CH1L, CH2L series Residual Current Circuit Breakers (RCCBs), CH1G series Isolating Switches, and accessories. They are widely used in industrial, commercial, and residential applications.
Overcurrent Protection Devices
• CH1/CH2 series MCBs comply with GB 10963 / IEC 60898-1. Available in 1P+N, 1P, 2P, 3P, and 4P configurations. Current range: 1A-63A. Maximum short-circuit breaking capacity: 10kA. Suitable for short-circuit/overload protection and infrequent circuit switching in AC distribution systems.
• CH2Z series DC MCBs comply with GB 14048.2 / IEC 60947-2. Available in 1P and 2P configurations. Current range: 1A-63A. Maximum short-circuit breaking capacity: 10kA. Suitable for short-circuit/overload protection and infrequent circuit switching in DC distribution systems.
Overcurrent and Residual Current Protection Devices
• CH1L/CH2L series RCCBs comply with GB 16917.1 / IEC 61009-1. Available in 1P+N, 2P, 3P, 3P+N, and 4P configurations. Current range: 1A-100A. Maximum short-circuit breaking capacity: 10kA. Provides short-circuit/overload protection while safeguarding against direct/indirect human contact and earth leakage faults in circuits/loads.
Operating and Installation Conditions
• Ambient Temperature
• Upper limit: +40℃; Lower limit: -5℃; Daily average ≤ +35℃.
• Relative Humidity
• ≤50% at +40℃; Higher humidity permitted at lower temperatures. Maximum monthly average relative humidity ≤90% (monthly average minimum temperature ≤ +25℃), accounting for surface condensation.
• Pollution Degree
• Degree 2.
• Installation Category
• Class II and III.
• Altitude
• ≤2,000m.
CH Series MCB Features
• Modern appearance with ergonomic design.
• Advanced current-limiting structure – rated short-circuit capacity up to 10kA.
• Comprehensive protection with overload and short-circuit protection devices.
• "Cage terminal" connection structure – safe and reliable wiring.
• Compatible with multiple accessories: auxiliary contacts, alarm contacts, shunt releases, under/over-voltage releases, busbars – enabling functional expansion.
• Modular and standardized design – flexible combinations and series integration.
• TH35mm standard rail mounting – quick and easy installation.
• All CH series MCBs feature isolation function (symbol: ).