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Siemens NGG3B090L Molded Case Circuit Breaker
- 90A
- 3 Pole
- Unit Mount
Siemens
NGG3B090L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG3B090L
Quantity
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Siemens NGG3B090L - 90A 3 Pole Molded Case Circuit Breaker
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Description
Built to handle demanding electrical loads, this 90-amp NGG frame breaker offers dependable long-time and instantaneous trip functions. The device integrates seamlessly into Siemens P1 through P3 panelboards and DIN rail enclosures. With a solid 25kAIC interrupting capacity at 480V and HACR certification, it suits diverse HVAC and motor applications. Facilities looking to replace older units can use this before transitioning to the newer 3VA5190-4EC31-0AA0 series.Specifications
| Brand | Siemens |
|---|---|
| Series | NGG |
| Amperage | 90A |
| 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 | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures, Motor Control Centers |
| 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 |
| 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, NOM, UL |
| Temp Rating | 40C |
Product FAQs
8 answersWhat types of panels and equipment are compatible with the NGG3B090L?
This breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards, enclosures, and motor control centers.
Does the NGG3B090L come with terminal lugs?
Yes, this breaker includes line and load side lugs. The standard lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
How is the NGG3B090L circuit breaker mounted?
It features a unit mount, feed-thru design. It can be independently mounted on a standard DIN rail or held in place by base mounting screws without the need for special adapters.
Is the NGG3B090L suitable for DC voltage applications?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for 125/250VDC with an interrupting capacity of 14kAIC.
What is the difference between Siemens NGG and NGB frame circuit breakers?
While both share a compact design, NGG breakers like the NGG3B090L are unit mount (feed-thru) breakers suitable for DIN rail or base mounting. NGB breakers are specifically configured for panelboard mounting applications.
Is the Siemens NGG3B090L HACR rated?
Yes, this breaker is HACR rated, making it suitable for group motor installations typically found in heating, air conditioning, and refrigeration equipment.
What do the L and I stand for in the trip function of this breaker?
The LI designation indicates that the thermal-magnetic trip unit provides Long-Time (overload) and Instantaneous (short-circuit) protection functions.
What does the L at the end of the NGG3B090L catalog number indicate?
The L suffix indicates that the circuit breaker is supplied with factory-installed line and load terminal lugs.
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