Free Shipping Over $99
Siemens HGB1B040B Molded Case Circuit Breaker
- 40A
- 1 Pole
- Bolt-On
Siemens
HGB1B040B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGB1B040B
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens HGB1B040B - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
25A 1 Pole Molded Case Circuit Breaker
60A 1 Pole Molded Case Circuit Breaker
20A 1 Pole Molded Case Circuit Breaker
Description
Delivering reliable branch circuit protection, this 40A single-pole MCCB belongs to the Siemens SENTRON line. It is designed to handle demanding commercial and industrial electrical loads with fixed thermal-magnetic trip functions. The bolt-on GB-frame unit installs seamlessly into Siemens P1, P2, P3, P4, and P5 panelboards. When modernizing older systems, this breaker is replaced by the 3VA5140-5ED12-0AA0 (mounting kit required).Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGB1B040B |
| Series | HGB |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 35kA @ 277VAC, 42kA @ 125VDC, 14kA @ 347VAC |
| Frame Type | HGB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, High Interrupting Capacity |
Product FAQs
5 answersWhich Siemens panelboards accept the HGB1B040B circuit breaker?
This breaker is compatible with Siemens Sentron P1, P2, P3, P4, and P5 series panelboards. It requires a bolted connection directly to the panel bus and cannot be used in load centers that require plug-on breakers.
Are the lugs included with the HGB1B040B, and what wire sizes do they accept?
Yes, the breaker comes with factory installed lugs. They accept 8 AWG to 1/0 AWG copper wire, or 8 AWG to 2/0 AWG aluminum wire. Always torque the terminals to the manufacturer specifications printed on the breaker.
Can the HGB1B040B be used in DC applications?
Yes, this breaker is UL rated for direct current applications up to 125VDC, making it suitable for specific control circuits or battery systems. It provides a maximum interrupting capacity of 42kA at 125VDC.
Can I replace a standard GB frame breaker with the HGB1B040B?
Yes, the HGB frame shares the same physical dimensions and mounting configuration as the standard GB frame. The HGB1B040B can be used as a direct replacement or upgrade when a higher interrupting rating is required for the application.
Is the HGB1B040B suitable for reverse feed applications?
Yes, Siemens HGB frame molded case circuit breakers are suitable for reverse feed applications. This allows the breaker to be back-fed when used as a main breaker in compatible panelboards.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.