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Siemens NGG2B020L Molded Case Circuit Breaker
- 20A
- 2 Pole
- Unit Mount
Siemens
NGG2B020L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG2B020L
Quantity
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Siemens NGG2B020L - 20A 2 Pole Molded Case Circuit Breaker
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Description
Built for commercial power distribution, the Siemens NGG2B020L delivers 20A of 2-pole molded case circuit protection. It utilizes fixed thermal and magnetic trip elements to provide consistent long-time and instantaneous (LI) defense. This NGG frame breaker mounts into Siemens P1, P2, and P3 panelboards, as well as motor control centers. It is superseded by the 3VA5120-4EC21-0AA0. Delivering a 25kAIC rating at 480V, it features HACR and HID lighting ratings for versatile facility use.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGG2B020L |
| Series | NGG |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | NGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures, Motor Control Centers |
| Wire Gauge | 14-10 AWG |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, HID, NOM, SWD, UL |
| Temp Rating | 40C |
Product FAQs
8 answersWhich Siemens panelboards accept the NGG2B020L circuit breaker?
This NGG frame breaker is compatible with Siemens P1, P2, and P3 panelboards. It can also be installed in compatible Siemens switchboards and motor control centers.
How is the NGG2B020L mounted in an enclosure?
While it is a unit-mount breaker, the Siemens NGG frame features an integral design that allows it to be mounted directly onto a standard DIN rail or secured to a base plate with mounting screws without the need for special adapters.
What is the modern replacement for the NGG2B020L?
The NGG2B020L has been superseded by the Siemens 3VA series. The direct replacement catalog number is 3VA5120-4EC21-0AA0.
Is the NGG2B020L suitable for HVAC and commercial lighting circuits?
Yes, this breaker carries HACR (Heating, Air Conditioning, and Refrigeration) and HID (High-Intensity Discharge) lighting ratings, making it fully rated for these specific commercial applications.
Does the NGG2B020L have a trip-free mechanism?
Yes, it features an overcenter toggle mechanism that is trip-free. In the event of a short circuit or overload, the contacts are forced apart and the breaker cannot be manually held closed by the handle.
Are the lugs on the NGG2B020L removable?
Yes, the NGG frame features removable lugs. If replacement is needed, this 20A breaker is compatible with Siemens lug kits such as the TC1Q1, which accommodates 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire.
Can I add a shunt trip to the NGG2B020L?
Yes, the Siemens NGG frame supports a range of UL-listed, field-installable accessories, including shunt trips and auxiliary switches, allowing for easy on-site customization.
What is the ambient calibration temperature for the NGG2B020L?
This NGG frame circuit breaker is factory calibrated for operation in a 40 degrees Celsius (104 degrees Fahrenheit) ambient environment.
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