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Miniature Circuit Breakers

Shop our wide selection of UL 489 miniature circuit breakers and UL 1077 supplementary protectors in both AC and DC voltages. They are available in one-, two- and three-pole versions with an amperage range up to 63A and in B, C or D trip curve options to meet your applications needs. Difference between UL 489 vs. UL 1077

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Altech Corp 2C20UR Miniature Circuit Breaker
20A Miniature Circuit Breaker, 2 Poles, C-Curve (Rated to 480Y/277 VAC) | 2C20UR
Retail: $41.24
Price: $25.90

The Altech Corp 2C20UR is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 20
  • Poles: 2
  • Trip Curve: C
  • UL 1077 Listed, UL
MFG Part# 2C20UR
Altech Corp 2D20DL Miniature Circuit Breaker
20A Miniature Circuit Breaker, 2 Poles, D-Curve (Rated to 125/250 VDC) | 2D20DL
Retail: $82.45
Price: $51.79

The Altech Corp 2D20DL is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 20
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2D20DL
Altech Corp 2D20UM Miniature Circuit Breaker
20A Miniature Circuit Breaker, 2 Poles, D-Curve (Rated to 40Y/277 VAC) | 2D20UM
Retail: $54.98
Price: $34.54

The Altech Corp 2D20UM is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 20
  • Poles: 2
  • Trip Curve: D
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 2D20UM
Altech Corp 2D20UL Miniature Circuit Breaker
20A Miniature Circuit Breaker, 2 Poles, D-Curve (Rated to 480Y/277 VAC) | 2D20UL
Retail: $77.44
Price: $48.65

The Altech Corp 2D20UL is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 20
  • Poles: 2
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 2D20UL
Altech Corp 2D20UR Miniature Circuit Breaker
20A Miniature Circuit Breaker, 2 Poles, D-Curve (Rated to 480Y/277 VAC) | 2D20UR
Retail: $41.24
Price: $25.90

The Altech Corp 2D20UR is suitable for branch circuit device protection applications with Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications.

  • Terminal Type: Box Clamp or Ring Tongue
  • Amperage: 20
  • Poles: 2
  • Trip Curve: D
  • UL 1077 Listed, UL, CE
MFG Part# 2D20UR
Noark B1N3B20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, B-Curve (Rated to 240 VAC) | B1N3B20
Retail: $66.09
Price: $60.48

The Noark B1N3B20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Poles: 3
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N3B20
Noark B1H3B20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, B-Curve (Rated to 480Y/277 VAC) | B1H3B20
Retail: $78.47
Price: $71.81

The Noark B1H3B20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Poles: 3
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H3B20
Noark B1N3C20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, C-Curve (Rated to 240 VAC) | B1N3C20
Retail: $64.30
Price: $58.84

The Noark B1N3C20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Poles: 3
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N3C20
Noark B1H3C20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, C-Curve (Rated to 480Y/277 VAC) | B1H3C20
Retail: $79.79
Price: $73.02

The Noark B1H3C20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Poles: 3
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H3C20
Noark B1N3D20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, D-Curve (Rated to 240 VAC) | B1N3D20
Retail: $66.09
Price: $60.48

The Noark B1N3D20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Poles: 3
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N3D20
Altech Corp 3D20UL Miniature Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, D-Curve (Rated to 480Y/277 VAC) | 3D20UL
Retail: $116.17
Price: $72.98

The Altech 3D20UL is suitable for branch circuit device protection.

  • Terminal Type: Dual Connection Terminal (Ring and Box)
  • Amperage: 20
  • Poles: 3
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 3D20UL
Noark B1H3D20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 3 Pole, D-Curve (Rated to 480Y/277 VAC) | B1H3D20
Retail: $79.79
Price: $73.02

The Noark B1H3D20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Poles: 3
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H3D20
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