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Siemens NGB2B015B Molded Case Circuit Breaker
- 15A
- 2 Pole
- Bolt-On
Siemens
NGB2B015B
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGB2B015B
Quantity
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Siemens NGB2B015B - 15A 2 Pole Molded Case Circuit Breaker
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Description
Delivering specialized protection for commercial facilities, the Siemens NGB2B015B is a 2-pole, 15-amp molded case circuit breaker. It is specifically engineered to handle the unique inrush currents associated with high-intensity discharge lighting. The breaker installs into Siemens P1, P2, and P3 panelboards using a reliable bolt-on mounting style. For future maintenance, this model is replaced by the newer 3VA51 series, which requires a specific mounting strap kit for proper fitment.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGB2B015B |
| Series | NGB |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 25kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | NGB |
|---|---|
| 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 Side Lugs (TC1Q1) |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, HID, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the NGB2B015B circuit breaker?
This bolt-on breaker is designed specifically for use in Siemens P1, P2, and P3 panelboards.
What wire sizes are accepted by the terminals on the NGB2B015B?
The factory-installed lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire.
Is the NGB2B015B rated for direct current (DC) applications?
Yes, this breaker carries a DC interrupting rating of 14kA at 125/250VDC, allowing it to be used in compatible DC systems.
What is the difference between Siemens NGB, HGB, and LGB circuit breakers?
They share the same physical GB frame size but offer different interrupting ratings. The NGB is the standard interrupting tier, while the HGB and LGB models provide higher short-circuit interrupting capabilities.
What type of protection does the NGB2B015B trip unit provide?
It features a fixed thermal-magnetic trip unit that provides long-time protection against overloads and instantaneous protection against short circuits.
How does the NGB2B015B connect to the panelboard?
It features a bolt-on connection, meaning it bolts directly to the busbars of the panelboard rather than snapping into place. This provides a secure, vibration-resistant connection.
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