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KEEPSMART AUTOMATION

Switchgear
AUB3L-40 Series Residual Current Operated Circuit Breakers

Scope of Application

AUB3L-40 residual current operated circuit breakers are applied in AC circuits with 50Hz/60Hz frequency, rated operational voltage of 230V and rated operational current up to 40A.

They provide overload protection, short-circuit protection and residual current protection for buildings, electrical equipment and human bodies, and can also be used for infrequent circuit switching.


Product Features

Safe Operation & Protection

  • All models equipped with red-green indicator window to display contact open/closed status

  • Residual current fault indication function

  • Class II electric shock protection for safer manual operation

High Operational Reliability

  • Withstands wiring tightening torque twice the national standard for firmer, more reliable connections

Easy Replacement & Installation

  • Bistable snap clip design for convenient mounting and removal

Superior Electrical Performance

  • Excellent current-limiting performance, reaching Class 3 current-limiting grade specified by standards

  • Electrical endurance up to 10,000 operating cycles

  • Short-circuit breaking capacity up to 10,000A

  • High sensitivity and accurate tripping for residual current protection, strong resistance to surge current and electromagnetic interference


Product Details>>

Operating Environment and Installation Conditions

  • Operating temperature range: -30℃ ~ +70℃

  • Storage temperature range: -40℃ ~ +85℃

  • Altitude: ≤ 2000 m

  • Pollution degree: Class 2

  • Installation category: Category Ⅱ / Ⅲ

  • Installation requirements: Mounted on standard 35mm DIN rail; the inclination of the mounting surface relative to the vertical plane shall not exceed ±5°


Product Code Definition


AU - Enterprise Code: KEEPSMART AUTOMATION LLC
B - Product Code: Miniature Circuit Breaker (MCB)
3 - Design Serial Number
L-  - Series Derivative Code: Electronic RCBO
40 - Frame Size Rating: 40A
L - Breaking Capacity: L:4500A  M:6000A  H:10000A
/C - Instantaneous Tripping Characteristic: Type C: 5In~10In ; Type D: 10In~20In
06 - Rated Current: 06: 6A; 10: 10A; 16: 16A; 20: 20A; 25: 25A; 32: 32A; 40: 40A
1N - Number of Poles: 1N: 1P+N
B - Sensitivity: B:30mA; C:100mA; D:300mA
AC - Residual Current Type: Type AC; Type A


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