MCB1-4D-1P-C50, Circuit Protector, UL 1077, 1-Pole, 50A
MCB1-4D-1P-C50, Circuit Protector, UL 1077, 1-Pole, 50A
FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, C Curve, 50A
Item: MCB1-4D-1P-C50
Weight: 0.3 lbs.
Made in: China
$16.90
In Stock
SKU:MCB1-4D-1P-C50
Specifications 
Related Items 
Resources 
Specifications
FMX Supplementary Protector, UL 1077, 277 VAC, 5 kA, 1-Pole, C Curve, 50A
- UL1077 Supplementary Protectors
- DIN rail mount chassis
- Current ratings up to 63A
- B, C and D curve models to suit a wide range of applications
- Reverse feed capable
- Easy to use, finger safe, captive screws, box lugs
- UL1077, IEC 60947-2
- UL File # E482436
GENERAL SPECIFICATIONS
| Number of Poles | 1 |
| Rated Operational Voltage | 480Y / 277VAC ; 125VDC ±10% |
| Rated Frequency | 50/60Hz |
| Rated Current | 50A |
| Instantaneous Tripping Type | C (5-10 x In) |
| Interrupting Rating | 120VAC : 10kA 240VAC : 10kA 277VAC : 5kA |
| Release Type | Thermal-Magnetic |
| Service Life | Electrical : 6,000 operations Mechanical : 20,000 operations |
| Degree of Protection | IP20 |
| Wire Size | 14 - 4 AWG |
| Tightening Torque | 31 in-lbs |
| Dimensions | 3.52"H x 0.70"W x 2.99"D |
| Operating Temperature | -22°F to 167°F |
| Rated Insulation Voltage | 500V |
| Rated Impulse With-stand | 6kV |
| Pollution Degree | Class III |
| Over Voltage Category | Class III |
| Mounting | 35mm DIN Rail |
| Altitude | Less than 6,561ft. |
| Atmospheric Conditions | At 68°F, relative humidity does not exceed 90% At 104°F, relative humidity does not exceed 50% |
| Agency Approvals | UL1077, UL486, IEC 60947-2 |
Resources
Application Notes
| Title | Summary | Related Links |
|---|---|---|
| AN-MCB-001 Usage of UL489 Circuit Breakers | Correct Usage of UL489 Circuit Breakers and UL1077 Supplementary Protectors ... |  |
| AN-MCB-003 Custom Length UL1077 Busbars | How to cut the MCB1 busbar.. | |
| AN-MCB-005 MCB Accessories | Provides installation instructions and explanations of accessories... | |
