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Siemens NGB1B030B Molded Case Circuit Breaker
- 30A
- 1 Pole
- Bolt-On
Siemens
NGB1B030B
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGB1B030B
Quantity
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Siemens NGB1B030B - 30A 1 Pole Molded Case Circuit Breaker
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Description
Operating at 30 amps, this single-pole SENTRON breaker safeguards commercial electrical systems against overloads and short circuits. The device features a rugged molded case and is HID rated for lighting applications. Installation is straightforward, as it bolts into Siemens P1, P2, and P3 panelboards. Maintenance teams should note this model is succeeded by the 3VA5130-4ED14-0AA0, requiring a strap kit for P1 panels. Rated for 25kA at 277VAC, it is reverse feed capable and HACR certified.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGB1B030B |
| Series | NGB |
| Amperage | 30A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 25kA @ 277VAC, 14kA @ 125VDC, 14kA @ 347VAC |
| Frame Type | GG |
|---|---|
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Lugs |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, HID, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the Siemens NGB1B030B?
This bolt-on circuit breaker is designed specifically for Siemens P1, P2, and P3 commercial panelboards. It will not fit in standard residential load centers.
Is the NGB1B030B circuit breaker suitable for reverse feed applications?
Yes. Because it is built with a non-interchangeable thermal-magnetic trip unit, it is suitable for reverse feed installations in accordance with UL 489 standards.
What wire sizes are accepted by the lugs on this breaker?
The factory-installed lugs accept 14 to 6 AWG copper (Cu) or 12 to 6 AWG aluminum (Al) conductors. Always refer to the breaker label for the precise torque specifications required during installation.
Can this breaker be utilized in direct current (DC) systems?
Yes, the NGB1B030B is rated for use on 125VDC systems with an interrupting capacity of 14kA. This makes it suitable for specific industrial control or DC distribution applications.
Can the NGB1B030B directly replace a Siemens BQD breaker?
While both breaker families are used in Siemens P1, P2, and P3 panelboards, they utilize different frame sizes. Replacing a BQD breaker with an NGB breaker typically requires a different branch mounting strap kit.
Does this breaker provide GFCI or AFCI protection?
No. The NGB1B030B features a standard thermal-magnetic trip unit for overload and short-circuit protection. It does not include ground fault or arc fault protection circuitry.
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