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Siemens NGG3B050L Molded Case Circuit Breaker
- 50A
- 3 Pole
- Unit Mount
Siemens
NGG3B050L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG3B050L
Quantity
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Siemens NGG3B050L - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Description
Engineered for commercial and industrial applications, the Siemens NGG3B050L provides robust overcurrent protection within the GB/GG frame footprint. This 3-pole, 50A molded case circuit breaker features fixed thermal and magnetic trip settings (LI) to quickly clear faults. It installs into Siemens enclosures, control panels, and switchboards, offering flexible unit mounting including DIN rail compatibility.Specifications
| Brand | Siemens |
|---|---|
| Series | NGG |
| Amperage | 50A |
| 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 Enclosures, Control Panels, Switchboards, DIN Rail |
| 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 |
|---|---|
| Accessories | Line and Load Lugs Included (TC1GG20) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, HID, NOM, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhat wire sizes are compatible with the NGG3B050L lugs?
The factory lugs accept 8 to 1/0 AWG copper conductors or 8 to 2/0 AWG aluminum conductors.
Can the NGG3B050L be mounted on a DIN rail?
Yes, this unit mount breaker is compatible with DIN rail installations, as well as standard Siemens enclosures, control panels, and switchboards.
How does the feed-thru connection on the NGG3B050L differ from plug-in breakers?
Feed-thru breakers like the NGG3B050L are designed for unit mounting and use lugs on both the line and load sides to connect to wiring, rather than snapping or bolting directly onto a panelboard bus.
Can the NGG3B050L be used in DC control panels?
Yes, in addition to its AC ratings, this breaker is rated for 125/250VDC systems with a 14kAIC interrupting capacity.
Can I adjust the trip settings on the NGG3B050L?
No, the thermal magnetic trip unit has fixed thermal and fixed magnetic settings. It provides standard long time and instantaneous (LI) protection without adjustable dials.
Can I replace an HGG or LGG breaker with the NGG3B050L?
NGG, HGG, and LGG breakers share the exact same GB/GG frame footprint and physical dimensions. However, you must verify that the NGG3B050L meets your system's available fault current requirements, as it has a lower interrupting rating than the HGG and LGG tiers.
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