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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

Products 1045-1056 of 1377
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Lovato P1MB3PC04 Miniature Circuit Breaker
Retail: $100.17
Price: $46.14

The Lovato P1MB3PC04 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 4
  • Poles: 3
  • Trip Curve: C
  • UL 1077 Listed, CSA C22.2 No. 235, IEC/EN 60898-1, IEC/EN 60947-2
MFG Part# P1MB3PC04
Lovato P1MBUH3PC04 Miniature Circuit Breaker
Retail: $185.06
Price: $73.82

The Lovato P1MBUH3PC04 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 4
  • Poles: 3
  • Trip Curve: C
  • UL 489 Listed, IEC/EN 60947-2
MFG Part# P1MBUH3PC04
Lovato P1MB3PB04 Miniature Circuit Breaker
Retail: $100.17
Price: $46.14

The Lovato P1MB3PB04 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 4
  • Poles: 3
  • Trip Curve: B
  • UL 1077 Listed, CSA C22.2 No. 235, IEC/EN 60947-2
MFG Part# P1MB3PB04
Lovato P1MB3PD04 Miniature Circuit Breaker
Retail: $100.17
Price: $46.14

The Lovato P1MB3PD04 is suitable for branch circuit device protection. (Pack of 4)

  • Terminal Type: Screw
  • Amperage: 4
  • Poles: 3
  • Trip Curve: D
  • UL 1077 Listed, CSA C22.2 No. 235, IEC/EN 60947-2
MFG Part# P1MB3PD04
Noark B1N1B50 Mini Circuit Breaker
Retail: $18.20
Price: $15.47

The Noark B1N1B50 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: B
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1B50
Altech 1BU50R Miniature Circuit Breaker
Retail: $17.32
Price: $10.88

The Altech 1BU50R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: B
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 1BU50R
Altech DC1CU50L Miniature Circuit Breaker
Retail: $34.66
Price: $21.77

The Altech DC1CU50L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# DC1CU50L
Altech 1CU50L Miniature Circuit Breaker
Retail: $32.33
Price: $20.31

The Altech 1CU50L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 1CU50L
Noark B1N1C50 Mini Circuit Breaker
Retail: $16.60
Price: $14.11

The Noark B1N1C50 is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: C
  • UL 489 Listed, CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS
MFG Part# B1N1C50
Altech 1CU50R Miniature Circuit Breaker
Retail: $17.32
Price: $10.88

The Altech 1CU50R is suitable for applications that require supplemental protection for control circuits and on the load side of branch circuit protectors.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: C
  • UL 1077 Listed, IEC/EN60898/60947-2
MFG Part# 1CU50R
Altech DC1DU50L Miniature Circuit Breaker
Retail: $34.66
Price: $21.77

The Altech DC1DU50L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# DC1DU50L
Altech 1DU50L Miniature Circuit Breaker
Retail: $32.33
Price: $20.31

The Altech 1DU50L is suitable for branch circuit device protection.

  • Terminal Type: Box Lugs
  • Amperage: 50
  • Pole: 1
  • Trip Curve: D
  • UL 489 Listed, C22.2 No.5-02, EN 60947-2, CE
MFG Part# 1DU50L