We never sell your data to third parties
Image for Illustration purposes only. Actual product may vary
WEG UMBW-1B1-4 MCB 1077 277VAC B 1P 4A Miniature CB
MODEL UMBW-1B1-4
Contact supplier for technical support on: 800-ASK-4WEG
$15.00 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
Select Quantity
Typically Ships in: 1 day
Returnable: See conditions
Max voltage
277 VAC
Number of poles
1 pole
Rated current
4 A
Trip curve
B
Type
Thermal-magnetic
UL approval
UL1077
Introducing the new WEG UMBW Series thermal-magnetic miniature circuit breakers. This new offering includes both UL489 and UL1077 approvals to provide a solution for circuit and equipment protection in industrial electrical equipment.
- AC and DC voltages available in one series;
- UL489 branch circuit protective device;
- UL1077 equipment protection;
- 17.5mm width per pole;
- Visual status indication;
- Positive trip-free snap action mechanism to ensure reliable switching;
- Cuttable bus bar connecting system.
SKU: 1313760
Weg premium efficiency motors
MRO Supply Rocks - My motor shipped the next day, free shipping, and their price was the lowest that I could find. I will be pricing all our motors with them first.
Read moreSKU: 1312255
Large motor purchased
Great website. prices very competitive. Would use again.
Read moreSKU: 2853624
Happy customer
My first time using MRO . The fast delivery " free" was fantastic .. received exactly what ordered at a very reasonable price , making my customer happy..
Read moreSKU: 1307933
Just what i needed
This part arrived quickly and the price was right. Worked great for our application.
Read more| Brand | Bunting Bearings |
| Model | AA041003 |
| Brand | LS Electric |
| Model | 02142592UL |
| Brand | TB Woods |
| Model | AX67 |
| Brand | Hubbell Wiring |
| Model | 02407001 |
| Brand | Gates Rubber |
| Model | 2VP42 1.1/8 |
| Brand | Alemite |
| Model | 398986-2 |
| Brand | LS Electric |
| Model | 02090748UL |
| Brand | Allen Bradley |
| Model | 809-A20E |
SKU: 1313760
Weg premium efficiency motors
MRO Supply Rocks - My motor shipped the next day, free shipping, and their price was the lowest that I could find. I will be pricing all our motors with them first.
Read moreSKU: 1312255
Large motor purchased
Great website. prices very competitive. Would use again.
Read moreSKU: 2853624
Happy customer
My first time using MRO . The fast delivery " free" was fantastic .. received exactly what ordered at a very reasonable price , making my customer happy..
Read moreSKU: 1307933
Just what i needed
This part arrived quickly and the price was right. Worked great for our application.
Read more