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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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Noark B1N1C20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 240 VAC, 60 VDC) | B1N1C20
Retail: $20.67
Price: $18.91

The Noark B1N1C20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1C20
Altech Corp 1C20UL Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 277 VAC) | 1C20UL
Retail: $38.73
Price: $24.33

The Altech 1C20UL is suitable for branch circuit device protection.

  • Terminal Type: Dual Connection Terminal (Box Lug and Ring Tongue)
  • Amperage: 20
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 1C20UL
Noark B1H1C20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 480Y/277 VAC) | B1H1C20
Retail: $27.92
Price: $25.55

The Noark B1H1C20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H1C20
Altech Corp 1D20DL Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 125 VDC) | 1D20DL
Retail: $41.24
Price: $25.90

The Altech Corp 1D20DL 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
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 1D20DL
Noark B1N1D20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 240 VAC, 60 VDC) | B1N1D20
Retail: $22.71
Price: $20.78

The Noark B1N1D20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1D20
Altech Corp 1D20UL Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 277 VAC) | 1D20UL
Retail: $38.73
Price: $24.33

The Altech 1D20UL is suitable for branch circuit device protection.

  • Terminal Type: Dual Connection Terminal (Box Clamp or Ring Tongue)
  • Amperage: 20
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 1D20UL
Altech Corp 1D20UR Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 277 VAC) | 1D20UR
Retail: $20.61
Price: $12.95

The Altech Corp 1D20UR 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
  • Pole: 1
  • Trip Curve: D
  • UL 1077 Listed, UL, CE
MFG Part# 1D20UR
Noark B1E1D20 Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 277 VAC/125 VDC) | B1E1D20
Retail: $16.82
Price: $15.39

The Noark B1E2D5 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 5
  • Poles: 2
  • Trip Curve: D
  • UL 1077 Listed
MFG Part# B1E1D20
Noark B1H1D20 Mini Circuit Breaker
20A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 480Y/277 VAC) | B1H1D20
Retail: $27.92
Price: $25.55

The Noark B1H1D20 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 20
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H1D20
Altech Corp 1B20UM Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Poles, B-Curve (Rated to 40Y/277 VAC) | 1B20UM
Retail: $27.48
Price: $17.26

The Altech Corp 1B20UM 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: 1
  • Trip Curve: B
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 1B20UM
Altech Corp 1C20UM Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Poles, C-Curve (Rated to 40Y/277 VAC) | 1C20UM
Retail: $27.48
Price: $17.26

The Altech Corp 1C20UM 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: 1
  • Trip Curve: C
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 1C20UM
Altech Corp 1D20UM Miniature Circuit Breaker
20A Miniature Circuit Breaker, 1 Poles, D-Curve (Rated to 40Y/277 VAC) | 1D20UM
Retail: $27.48
Price: $17.26

The Altech Corp 1D20UM 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: 1
  • Trip Curve: D
  • UL 508 Listed, UL, cUL, CSA
MFG Part# 1D20UM
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