KEEPSMART AUTOMATION

Switchgear

AUB3-63 Series of Miniature Circuit Breakers

Scope of Application

Circuit breakers of AUB3-63 series are used in AC circuits with frequency 50Hz/60Hz, rated operational voltage 230V/400V and rated operational current up to 63A. They feature overload protection, short-circuit protection and isolation functions, and can serve as switches for infrequent switching operations.

Product Features

Safe Operation & Protective Performance

All models equipped with red-green status window to display contact open/closed position
Class II protection against electric shock for safer manual operation

High Operational Reliability

Withstand wiring torque exceeding national standard for more stable connections
Integrated bimetallic structure plus innovative calibration process to guarantee stable overload protection

Easy Installation & Replacement

Bistable buckle design for convenient mounting and disassembly

Excellent Electrical Performance

Outstanding current-limiting capacity, meeting Class 3 current-limiting grade specified by standards
Electrical service life up to 10,000 operating cycles
Breaking capacity up to 10000A
Built-in overload protection and short-circuit protection

Product Details>>

Operating Environment and Installation Conditions

Operating temperature range: -35℃ ~ +70℃
Storage temperature range: -40℃ ~ +85℃
Altitude for operation: not exceeding 2000 m
Pollution degree: Class 2
Installation category: Category Ⅱ / Ⅲ
Installation requirements: Mounting on standard 35 mm DIN rail; the tilt angle between the mounting surface and vertical plane shall not exceed ±5°

Product Model Code Definition
AU - Enterprise Code: KEEPSMART AUTOMATION LLC
B - Product Code: Miniature Circuit Breaker (MCB)
3 - Design Serial Number: 3
-63 - Frame Current Rating: 63:63A
M - Breaking Capacity: L: 4500A; M: 6000A; H: 10000A
/C - Instantaneous Tripping Characteristic: B: 3In ~ 5In; C: 5In ~ 10In; D: 10In ~ 20In
06 - Rated Current: 01: 1A; 02: 2A; 03: 3A; 04: 4A; 06: 6A; 10: 10A; 13: 13A; 15: 15A; 16: 16A; 20: 20A; 25: 25A; 32: 32A; 40: 40A; 50: 50A; 63: 63A
1N - Number of Poles: 1: 1P; 1N: 1P+N; 2: 2P; 3: 3P; 3N: 3P+N; 4: 4P
Note: For 1A~4A models with L-type breaking capacity, only B and C type instantaneous tripping characteristics are available.