Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens NGG3B025L Molded Case Circuit Breaker
- 25A
- 3 Pole
- Unit Mount
Siemens
NGG3B025L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG3B025L
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens NGG3B025L - 25A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
20A 3 Pole Molded Case Circuit Breaker
15A 3 Pole Molded Case Circuit Breaker
40A 3 Pole Molded Case Circuit Breaker
Description
Engineered for industrial applications, the Siemens NGG3B025L provides robust overcurrent protection. This 3-pole, 25A MCCB is part of the Sentron GG frame series, featuring a fixed thermal-magnetic trip unit with LI functions. It installs into Siemens P1, P2, and P3 panelboards or standard DIN rails. The unit comes complete with TC1Q1 line and load lugs for immediate wiring. Rated 25 kAIC at 480VAC, it is HACR rated and officially replaced by the 3VA5125-4EC31-0AA0 for newer designs.Specifications
| Brand | Siemens |
|---|---|
| Series | NGG |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 120VAC, 65kA @ 240VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | GG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures, Motor Control Centers |
| 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, Undervoltage Release |
|---|---|
| Accessories | Line & Load Side Lugs (TC1Q1) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, HID, NOM, UL |
| Temp Rating | 40C |
Product FAQs
10 answersWhat Siemens equipment accepts the NGG3B025L breaker?
This GG frame breaker integrates with Siemens P1, P2, and P3 panelboards. It is also suitable for Siemens switchboards, motor control centers, and standalone enclosures that accept unit mount SENTRON breakers.
Is the NGG3B025L suitable for reverse feed applications?
Yes, this breaker is rated for reverse feed applications. The trip free over center toggle mechanism functions properly regardless of which side is used for line or load connections.
How is the NGG3B025L mounted in an enclosure?
This unit mount breaker can be installed directly onto a standard DIN rail or base mounted using mounting screws. It does not require additional mounting adapters for these standard installations.
What wire sizes are accepted by the NGG3B025L lugs?
The factory installed line and load lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire. Ensure you follow the torque specifications printed directly on the breaker label during installation.
What does the trip free mechanism on the NGG3B025L do?
The trip free over center toggle mechanism ensures the breaker will trip internally during an overcurrent or short circuit event, even if the operating handle is physically held or locked in the ON position.
Can the NGG3B025L be used in DC circuits?
Yes, this thermal magnetic breaker is rated for DC applications up to 250V DC, providing an interrupting capacity of 14kA at 125/250V DC.
Can I adjust the trip settings on the NGG3B025L?
No, this breaker features fixed thermal and fixed magnetic trip elements. The long time and instantaneous trip functions are factory set and cannot be adjusted in the field.
Is there a direct replacement for the NGG3B025L circuit breaker?
Siemens is phasing out the NGG series. The manufacturer recommended successor is the 3VA51 series, specifically catalog number 3VA51254ED360AA0. Always verify fit, form, and function, as lug wire sizes and dimensions may vary between the legacy GG frame and the new 3VA portfolio.
Is the NGG3B025L HACR rated?
Yes, this 25A GG frame breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
What does the L at the end of the NGG3B025L catalog number indicate?
The L suffix indicates that the breaker comes with factory installed line and load lugs. If ordered without the L suffix, the breaker is supplied without lugs.
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.