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411 Products

MCB1-4D-1P-D50

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, D Curve, 50A

In Stock
$17.10
QuantityPrice
MCB1-4D-2P-D50

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, D Curve, 50A

In Stock
$34.20
QuantityPrice
MCB1-4D-3P-D50

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, D Curve, 50A

In Stock
$50.85
QuantityPrice
MCB1-4D-2P-B63

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, B Curve, 63A

In Stock
$33.75
QuantityPrice
MCB1-4D-1P-B60

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, B Curve, 60A

In Stock
$16.85
QuantityPrice
MCB1-4D-2P-B60

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, B Curve, 60A

In Stock
$33.75
QuantityPrice
MCB1-4D-3P-B60

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, B Curve, 60A

In Stock
$50.70
QuantityPrice
MCB1-4D-1P-C60

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, C Curve, 60A

In Stock
$16.90
QuantityPrice
MCB1-4D-2P-C60

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, C Curve, 60A

In Stock
$33.80
QuantityPrice
MCB1-4D-3P-C60

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, C Curve, 60A

In Stock
$50.20
QuantityPrice
MCB1-4D-1P-D60

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, D Curve, 60A

In Stock
$17.10
QuantityPrice
MCB1-4D-2P-D60

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, D Curve, 60A

In Stock
$34.20
QuantityPrice
MCB1-4D-3P-D60

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, D Curve, 60A

In Stock
$50.85
QuantityPrice
MCB1-4D-1P-B63

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, B Curve, 63A

In Stock
$16.85
QuantityPrice
MCB1-4D-3P-B63

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, B Curve, 63A

In Stock
$50.70
QuantityPrice
MCB1-4D-1P-C63

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, C Curve, 63A

In Stock
$16.90
QuantityPrice
MCB1-4D-2P-C63

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, C Curve, 63A

In Stock
$33.80
QuantityPrice
MCB1-4D-3P-C63

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, C Curve, 63A

In Stock
$50.20
QuantityPrice
MCB1-4D-1P-D63

FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, D Curve, 63A

In Stock
$17.10
QuantityPrice
MCB1-4D-2P-D63

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 2-Pole, D Curve, 63A

In Stock
$34.20
QuantityPrice
MCB1-4D-3P-D63

FMX Supplementary Protector, UL 1077, 480 VAC, 5 kA, 3-Pole, D Curve, 63A

In Stock
$50.85
QuantityPrice
MCB4-L2D-1P-C1

FMX Miniature Circuit Breaker, UL 489, 240 VAC / 60 VDC, 10 kA, 1-Pole, Box Lug Terminal, C Curve, 1A

In Stock
$27.35
QuantityPrice
MCB4-L40-1P-C1

FMX Miniature Circuit Breaker, UL 489, 277 VAC, 10 kA, 1-Pole, Box Lug Terminal, C Curve, 1A

In Stock
$27.40
QuantityPrice
MCB4-L2D-2P-C1

FMX Miniature Circuit Breaker, UL 489, 240 VAC / 125 VDC, 10 kA, 2-Pole, Box Lug Terminal, C Curve, 1A

In Stock
$54.70
QuantityPrice

 MCB4 Vs MCB1




MCB4 Series

MINI CIRCUIT BREAKERS

• DIN rail mount chassis
• Current ratings up to 63A
• C and D curve models
• Wide range of accessories
• Finger safe, captive screw, box lug terminals
• UL489, UL486, IEC 60947-2
• UL File # E477352

Applications:

• Branch circuit protection to prevent damage to conductors
• Protection of external loads such as motors, receptacles, HACR equipment, and others



MCB1 Series

SUPPLEMENTARY PROTECTORS

• DIN rail mount chassis
• Current ratings up to 63A
• B, C, and D curve models
• Wide range of accessories
• Finger safe, captive screw, box lug terminals
• UL1077, IEC 60947-2
• UL File # E482436

Applications:

• Individual component protection to keep parallel loads from tripping together
• Installed within control circuits, lighting, and appliances
• Protection of sensitive loads within an enclosure such as PLC units, power supplies, condensation heaters, fans, etc.


 UL489 Vs UL1077




UL489

• A UL489 Mini Circuit Breaker can be used for branch protection as the primary overcurrent device.
• UL489 Mini Circuit Breakers can also be used as supplemental protection within an appliance or other electrical equipment.


UL1077

• UL1077 Supplementary Protectors are designed to be used only within an appliance or other electrical equipment to provide supplemental protection or as a means to open the circuit.
• Supplementary Protectors cannot be used in place of a UL489 Branch Circuit Protector to provide primary overcurrent protection.
• If a supplementary protector can be removed from the circuit and maintain proper protection, then the supplementary protector is being used correctly.