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Siemens NGG2B050 Molded Case Circuit Breaker
- 50A
- 2 Pole
- Unit Mount
Siemens
NGG2B050
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG2B050
Quantity
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Siemens NGG2B050 - 50A 2 Pole Molded Case Circuit Breaker
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Description
Delivering 50 amps of reliable overcurrent defense, the Siemens NGG2B050 is a 2-pole molded case circuit breaker designed for commercial facilities. It is an ideal choice for protecting critical circuits within control panels and main switchboards. The unit-mount construction allows for straightforward integration into DIN rail systems. Note that this specific model does not include lugs, requiring separate hardware for termination.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NGG2B050 |
| Series | NGG |
| Amperage | 50A |
| 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 | GG |
|---|---|
| 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, Motor Operator, Rotary Handle, Lugs, Nut Keeper Kit |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, HID, NOM, UL |
| Temp Rating | 40C |
Product FAQs
6 answersHow is the Siemens NGG2B050 secured within a control panel?
This unit-mount breaker offers flexible installation options. It can be snapped directly onto a standard DIN rail or secured to a backpan using standard screw mounting.
Is the Siemens NGG2B050 suitable for direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for 125/250VDC applications, providing up to 14kAIC of interrupting capacity for DC circuits.
What types of enclosures are compatible with the NGG2B050?
This GG-frame breaker is designed for integration into DIN rail enclosures, industrial control panels, and main switchboards.
What protection functions are included in the NGG2B050 trip unit?
It features a thermal-magnetic trip unit with fixed Long-Time (L) and Instantaneous (I) functions, providing reliable defense against both sustained overloads and sudden short circuits.
Do the terminals on the NGG2B050 support both copper and aluminum wiring?
Yes, the standard lugs accept both copper and aluminum conductors. The supported wire range is 8 to 1/0 AWG for copper and 8 to 2/0 AWG for aluminum.
Can the NGG2B050 be used in reverse feed applications?
Yes, this molded case circuit breaker is suitable for reverse feed applications, allowing power to be supplied from either the line or load side terminals.
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