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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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Lovato P1MBUL3PC40 Miniature Circuit Breaker
40A Miniature Circuit Breakers, 3 Pole, C-Curve (Rated to 400VAC) | P1MBUL3PC40
Retail: $290.37
Price: $110.74

The Lovato P1MBUL3PC40 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 40
  • Poles: 3
  • Trip Curve: C
  • UL 489 Listed, IEC/EN 60947-2
MFG Part# P1MBUL3PC40
Lovato P1MB3PB40 Miniature Circuit Breaker
40A Miniature Circuit Breakers, 3 Poles, B-Curve (Rated to 230-400 VAC) | P1MB3PB40
Retail: $176.76
Price: $66.90

The Lovato P1MB3PB40 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 40
  • Poles: 3
  • Trip Curve: B
  • UL 1077 Listed, CSA C22.2 No. 235, IEC/EN 60947-2
MFG Part# P1MB3PB40
Lovato P1MB3PD40 Miniature Circuit Breaker
40A Miniature Circuit Breakers, 3 Poles, D-Curve (Rated to 230-400 VAC) | P1MB3PD40
Retail: $176.76
Price: $66.90

The Lovato P1MB3PD40 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 40
  • Poles: 3
  • Trip Curve: D
  • UL 1077 Listed, CSA C22.2 No. 235, IEC/EN 60947-2
MFG Part# P1MB3PD40
Noark B1N1B4 Mini Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, B-Curve (Rated to 240 VAC, 60 VDC) | B1N1B4
Retail: $22.71
Price: $20.78

The Noark B1N1B4 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 4
  • Pole: 1
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1B4
Altech Corp 1B4UR Miniature Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, B-Curve (Rated to 277 VAC) | 1B4UR
Retail: $20.61
Price: $12.95

The Altech Corp 1B4UR 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: 4
  • Pole: 1
  • Trip Curve: B
  • UL 1077 Listed, UL
MFG Part# 1B4UR
Noark B1H1B4 Mini Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, B-Curve (Rated to 480Y/277 VAC) | B1H1B4
Retail: $26.56
Price: $24.30

The Noark B1H1B4 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 4
  • Pole: 1
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H1B4
Altech Corp 1C4DL Miniature Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 125 VDC) | 1C4DL
Retail: $41.24
Price: $25.90

The Altech Corp 1C4DL 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: 4
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 1C4DL
Noark B1N1C4 Mini Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 240 VAC, 60 VDC) | B1N1C4
Retail: $20.67
Price: $18.91

The Noark B1N1C4 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 4
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1C4
Altech Corp 1C4UL Miniature Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 277 VAC) | 1C4UL
Retail: $38.73
Price: $24.33

The Altech Corp 1C4UL 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: 4
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 1C4UL
Noark B1H1C4 Mini Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, C-Curve (Rated to 480Y/277 VAC) | B1H1C4
Retail: $27.92
Price: $25.55

The Noark B1H1C4 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 4
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1H1C4
Altech Corp 1D4DL Miniature Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 125 VDC) | 1D4DL
Retail: $41.24
Price: $25.90

The Altech Corp 1D4DL 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: 4
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, UL, cUL, IEC, CE
MFG Part# 1D4DL
Noark B1N1D4 Mini Circuit Breaker
4A Miniature Circuit Breaker, 1 Pole, D-Curve (Rated to 240 VAC, 60 VDC) | B1N1D4
Retail: $22.71
Price: $20.78

The Noark B1N1D4 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 4
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1D4
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