Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens NGB3B025B Molded Case Circuit Breaker
- 25A
- 3 Pole
- Bolt-On
Siemens
NGB3B025B
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGB3B025B
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens NGB3B025B - 25A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens NGB3B025B - 25A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | NGB3B025B |
| Series | NGB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 25kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, HID, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Quantity
Siemens NGB3B025B - 25A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | NGB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 25kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, HID, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Similar Items
30A 3 Pole Molded Case Circuit Breaker
20A 3 Pole Molded Case Circuit Breaker
35A 3 Pole Molded Case Circuit Breaker
Description
Part of the Sentron GB frame family, this 25A three-pole breaker delivers robust performance for commercial and industrial electrical systems. It installs into Siemens P1, P2, and P3 panelboards, serving as a reliable component before transitioning to the newer 3VA51 series. Featuring a 25kAIC rating at 480Y/277V, it includes factory-installed load lugs and carries HACR, HID, and SWD ratings for versatile switching applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGB3B025B |
| Series | NGB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 25kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, HID, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersCan the Siemens NGB3B025B be reverse fed?
Yes, this thermal-magnetic breaker is suitable for reverse feed applications because it does not have restrictive line and load markings.
Is the NGB3B025B rated for HVAC or lighting loads?
Yes, it carries both HACR (Heating, Air Conditioning, and Refrigeration) and HID (High-Intensity Discharge) ratings, making it suitable for commercial HVAC equipment and specialized lighting circuits.
Is the NGB3B025B being phased out by Siemens?
Yes, Siemens is replacing the legacy NGB series with the newer 3VA51 series. If you are upgrading to a 3VA51 breaker in an existing P1, P2, or P3 panelboard, a retrofit mounting kit will be required.
Does the NGB3B025B include load-side lugs?
Yes, this breaker includes factory-installed load lugs. The B suffix in the catalog number indicates this standard lug configuration. The lugs accept copper or aluminum wiring.
Can the NGB3B025B be mounted on a DIN rail?
No. While the similar Siemens NGG frame can be DIN rail mounted, the NGB series is specifically configured with a bolt-on line end for direct installation into Siemens panelboards.
Can the NGB3B025B be used in a series-rated system?
Yes, it can be applied in series-connected short circuit ratings with downstream breakers to achieve a higher overall interrupting rating, provided the specific combination is tested and listed by UL or CSA.
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.