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Siemens NGB1B020B Molded Case Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Siemens
NGB1B020B
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGB1B020B
Quantity
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Siemens NGB1B020B - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens NGB1B020B - 20A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | NGB1B020B |
| Series | NGB |
| Amperage | 20A |
| 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 | #14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, HACR, SWD, UL 489 |
| Approval | CSA, HACR, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, SWD Rated, Reverse Feed |
Sold out
Quantity
Siemens NGB1B020B - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | NGB1B020B-R |
| Series | NGB |
| Amperage | 20A |
| 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 | #14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, HACR, SWD, UL 489 |
| Approval | CSA, HACR, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, SWD Rated, Reverse Feed |
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Description
Delivering robust branch circuit protection, the Siemens NGB1B020B is a 20A molded case circuit breaker tailored for commercial facilities. It utilizes standard thermal-magnetic trip technology to defend against electrical faults. The single-pole unit mounts into Siemens P1, P2, and P3 panelboards. For future upgrades, this GB/GG frame breaker is officially replaced by the 3VA51 series.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGB1B020B |
| Series | NGB |
| Amperage | 20A |
| 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 | #14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, HACR, SWD, UL 489 |
| Approval | CSA, HACR, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, SWD Rated, Reverse Feed |
Product FAQs
5 answersWhich Siemens panelboards accept the NGB1B020B circuit breaker?
This unit is designed for installation in Siemens P1, P2, and P3 panelboards. It utilizes a bolt-on connection to secure directly to the panel bus.
What conductor sizes and materials are supported by the NGB1B020B terminals?
The standard lugs accommodate wire sizes ranging from #14 AWG to 1/0 AWG. They are dual-rated for use with either copper or aluminum conductors.
Is this breaker rated for direct current applications?
Yes, it is approved for use in DC circuits up to 125VDC, providing an interrupting rating of 14kAIC at that voltage.
Are the trip settings on the NGB1B020B adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It delivers standard long-time and instantaneous protection but does not include adjustable dials for field calibration.
What frame classification applies to this breaker?
The NGB1B020B is a GG frame breaker, which is part of the Siemens SENTRON family and falls under the broader GB/GG frame group.
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