MCB4-L40-1P-D1, Mini Circuit Breaker, UL 489, 1-Pole, 1A
MCB4-L40-1P-D1, Mini Circuit Breaker, UL 489, 1-Pole, 1A
FMX Miniature Circuit Breaker, UL 489, 277 VAC, 10 kA, 1-Pole, Box Lug Terminal, D Curve, 1A
Item: MCB4-L40-1P-D1
Weight: 0.3 lbs.
Made in: China
$27.55
In Stock
SKU:MCB4-L40-1P-D1
Specifications 
Related Items 
Resources 
Specifications
FMX Miniature Circuit Breaker, UL 489, 277 VAC, 10 kA, 1-Pole, Box Lug Terminal, D Curve, 1A
- UL 489 Miniature Circuit Breakers
- DIN rail mount chassis
- Current ratings up to 63A
- C and D curve models to suit a wide range of applications
- Reverse feed capable
- 277VAC (L40 Series), 240VAC/60VDC (L2D Series), 10kA IR
- Easy to use, finger safe, captive screws, box lugs
- UL489, UL486, IEC 60947-2
- UL File # E477352
GENERAL SPECIFICATIONS
| Number of Poles | 1 |
| Rated Operational Voltage | 480Y / 277VAC; 240VAC +5% 60VDC +5% |
| Rated Frequency | 50/60Hz |
| Rated Current | 1A |
| Instantaneous Tripping Type | D (10-20 x In) |
| Interrupting Rating | 120VAC : 10kA 240VAC : 10kA 277VAC : 10kA 60VDC : 10kA |
| Release Type | Thermal-Magnetic |
| Service Life | Electrical : 10,000 operations Mechanical : 20,000 operations |
| Degree of Protection | IP20 |
| Wire Size | Single Wire : 18 - 4 AWG Double Wire : 18 - 6 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-002 Custom Length UL489 Busbars | How to cut the MCB4 (UL489) busbar.. | |
