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Siemens NGG3B100L Molded Case Circuit Breaker
- 100A
- 3 Pole
- Unit Mount
Siemens
NGG3B100L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG3B100L
Quantity
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Siemens NGG3B100L - 100A 3 Pole Molded Case Circuit Breaker
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Description
Serving as a critical component in industrial power distribution, this 100A Sentron breaker utilizes proven thermal-magnetic trip technology. It fastens securely into Siemens P1, P2, and P3 panelboards, while also accommodating DIN rail mounting for control panel flexibility. Delivering 25kAIC at 480VAC, the reverse-feed capable unit handles complex routing. While superseded by the 3VA5110-4ED36-0AA0, this exact match remains essential for servicing existing GB/GG frame installations.Specifications
| Brand | Siemens |
|---|---|
| Series | NGG |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 120VAC, 65kA @ 240VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | NGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | DIN Rail Enclosures, Control Panels, Switchboards |
| 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, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Line & Load Side Lugs (3TC1GG20) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, NOM, UL |
| Temp Rating | 40C |
Product FAQs
8 answersDoes the NGG3B100L require an adapter bracket for DIN rail mounting?
No, the Siemens NGG frame is designed with an integral mounting channel that allows it to snap directly onto a standard DIN rail. It can also be secured to a base plate with standard mounting screws without requiring extra adapters.
What does the L suffix in the NGG3B100L catalog number mean?
The L indicates that this specific model comes from the factory with line and load-side wire lugs included. If you are sourcing a version that requires custom terminations, the L is omitted from the base catalog number.
Is the Siemens NGG3B100L approved for reverse feed applications?
Yes, because it is built with a non-interchangeable thermal-magnetic trip unit, this breaker is UL listed for reverse feed applications.
Can I install this NGG frame breaker directly onto a standard Siemens panelboard bus?
The NGG frame is specifically designed for unit mounting in DIN rail enclosures, control panels, or switchboards. For plug-on or bolt-on installation within a typical Siemens lighting panelboard, the NGB frame equivalent (such as NGB3B100L) is usually required instead.
How should I wire this 3-pole breaker if I am using it in a 250VDC system?
When applying this molded case circuit breaker on a 250 VDC system, Siemens application guidelines require placing one pole on each leg of the DC supply circuit.
Are there any specific ambient temperature requirements for this breaker?
The NGG frame is factory calibrated for a 40 degrees C (104 degrees F) ambient operating temperature. It is designed for enclosed spaces free of corrosive vapors or heavy dust. For installations outdoors or in damp environments, it must be housed in a suitably rated protective enclosure.
Will the breaker still trip if the handle is physically held in the ON position?
Yes. The NGG frame features a trip-free overcenter toggle mechanism. If a short circuit or overload condition occurs, the internal contacts are forced apart and the breaker will trip even if the handle is physically restrained.
Is the NGG3B100L suitable for HVAC equipment protection?
Yes, this circuit breaker is HACR rated, meaning it is safety certified for use with commercial heating, air conditioning, and refrigeration equipment.
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