CDB6i Standard Miniature Circuit Breaker

CDB6i Standard Miniature Circuit Breaker

The CDB6i series standard miniature circuit breaker is a high-performance protection device designed for low-voltage AC distribution systems. It provides overload protection, short circuit protection, and electrical isolation functions for safe and reliable circuit operation.

The product is suitable for AC230/400V, AC240/415V, and AC400/415V electrical systems, with rated current options ranging from 1A to 63A. It supports multiple pole configurations including 1P, 1P+N, 2P, 3P, 3P+N, and 4P to meet different distribution requirements.

CDB6i adopts thermal-magnetic protection technology and provides B, C, and D tripping curves for different application scenarios, including lighting circuits, general loads, and equipment with high starting currents.

With a compact structure, reliable performance, and flexible installation design, the circuit breaker can be installed on standard 35mm DIN rails and supports both top and bottom incoming wiring. Various electrical and mechanical accessories are available for extended functions.

The CDB6i series is widely used in residential buildings, commercial facilities, industrial control cabinets, distribution boxes, and terminal power protection systems.

The product complies with GB/T 10963.1 and IEC/EN 60898-1 standards, and meets CCC, CE, and RoHS certification requirements.

Product Features

• Provides overload protection, short circuit protection, and isolation functions
• Wide rated current range from 1A to 63A
• Multiple pole configurations available
• Available with B, C, and D tripping curves
• Standard 35mm DIN rail installation
• Supports top and bottom incoming wiring
• Compact design with flexible installation
• Supports electrical and mechanical accessories

Applications

• Residential distribution systems
• Commercial building electrical systems
• Industrial control cabinets
• Distribution boxes
• Low-voltage terminal protection systems

Technical Parameters

Parameter	Value	Unit
Product Series	CDB6i	-
Product Type	Standard Miniature Circuit Breaker	-
Rated Operating Voltage Ue	AC230/400, AC240/415, AC400/415	V
Rated Current In	1, 2, 3, 4, 5, 6, 8, 10, 13, 16, 20, 25, 32, 40, 50, 63	A
Rated Frequency	50/60	Hz
Number of Poles	1P, 1P+N, 2P, 3P, 3P+N, 4P	-
Breaking Capacity	6, 10	kA
Tripping Curve	B, C, D Type	-
Rated Insulation Voltage Ui	500	V
Rated Short-Circuit Capacity Icn	6/10	kA
Rated Impulse Withstand Voltage Uimp	4	kV
Dielectric Test Voltage	2kV (45~65Hz, 1 minute)	-
Isolation Function	Available	-
Pollution Degree	2	-
Tripping Type	Thermal Magnetic Release	-
Protection Degree	IP20 (device) / IP40 (inside distribution box)	-

Mechanical Characteristics

Parameter	Value	Unit
Handle Color	Red	-
ON/OFF Indicator	ON-OFF indication	-
Mechanical Endurance	20000	Operations
Electrical Endurance	12000	Operations
Mechanical Shock Resistance	30g, 3 times in X/Y/Z directions, 11ms duration	-
Vibration Resistance	According to IEC/EN 60068-2-6	-
Damp Heat Resistance	Category 2, 28-day cycle test	-
Reference Ambient Temperature	30	°C
Operating Temperature	-35~70	°C
Storage Temperature	-40~85	°C

Installation Characteristics

Parameter	Value	Unit
Installation Method	Standard 35mm DIN rail mounting	-
Terminal Type	U-type terminal	-
Maximum Cable Capacity	25	mm²
Maximum Tightening Torque	2.5	N·m
Wiring Direction	Top and bottom wiring available	-
Installation Orientation	Flexible installation	-

Tripping Characteristics

Type	Characteristic
B Curve	3In~5In
C Curve	5In~10In
D Curve	10In~14In