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Siemens NGB3B070B Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Siemens
NGB3B070B
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGB3B070B
Quantity
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Siemens NGB3B070B - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens NGB3B070B - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | NGB3B070B |
| Series | NGB |
| Amperage | 70A |
| 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 |
| Frame Type | GG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 8 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 Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Quantity
Siemens NGB3B070B - 70A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | NGB |
| Amperage | 70A |
| 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 |
| Frame Type | GG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 8 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 Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
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Description
Built for robust power distribution, the Siemens NGB3B070B is a 3-pole, 70A molded case circuit breaker equipped with factory-installed load lugs. It accepts 8-1/0 AWG copper wire, making it ideal for commercial facilities. This bolt-on breaker installs into Siemens P1, P2, and P3 panelboards. Replacing this unit with the 3VA5170-4ED34-0AA0 model in P1 panels requires a strap kit. Featuring fixed thermal-magnetic trip settings, it provides reliable protection and delivers 100kAIC at 240V.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGB3B070B |
| Series | NGB |
| Amperage | 70A |
| 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 |
| Frame Type | GG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 8 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 Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the NGB3B070B circuit breaker?
This bolt-on breaker is designed specifically for use in Siemens P1, P2, and P3 commercial panelboards. It is not compatible with standard residential plug-on load centers.
What wire sizes and materials do the factory lugs on the NGB3B070B accept?
The factory-installed lugs accommodate 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
Can the Siemens NGB3B070B be used in DC voltage applications?
Yes, this breaker is rated for DC applications up to 125/250V DC, providing an interrupting capacity of 14kA at that voltage.
How does the interrupting capacity (AIC) of the NGB3B070B change based on system voltage?
The interrupting rating scales inversely with the system voltage. It provides 100kAIC at 240V AC, 25kAIC at 480V AC, and 14kAIC at its maximum rating of 600V AC.
Does the NGB3B070B require a DIN rail for installation?
No. While similar Siemens NGG frame breakers can be DIN rail mounted, the NGB series is specifically configured with a bolt-on connection for direct installation into Siemens panelboards.
Are the thermal and magnetic trip settings adjustable on the NGB3B070B?
No, this breaker features a fixed thermal and fixed magnetic trip unit (Long-Time and Instantaneous functions) that cannot be field-adjusted.
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