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Siemens NGG3B045L Molded Case Circuit Breaker
- 45A
- 3 Pole
- Unit Mount
Siemens
NGG3B045L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG3B045L
Quantity
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Siemens NGG3B045L - 45A 3 Pole Molded Case Circuit Breaker
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Description
Delivering 45 amps of thermal-magnetic protection, this 3-pole molded case circuit breaker is engineered for robust industrial applications. The NGG3B045L safeguards critical commercial circuits against overloads. Designed for versatile installation, it mounts into Siemens enclosures, switchboards, and standard DIN rails. For facility upgrades, this model is replaced by the 3VA5145-4ED31-0AA0. Rated at 100kAIC at 120VAC, the breaker is HACR rated and includes TC1GG20 line and load lugs.Specifications
| Brand | Siemens |
|---|---|
| Series | NGG |
| Amperage | 45A |
| 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
7 answersWhat wire sizes are compatible with the lugs on the NGG3B045L?
The included line and load lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
Can the Siemens NGG3B045L be mounted on a DIN rail?
Yes, this breaker is compatible with DIN rail mounting, as well as standard unit mounting in Siemens enclosures, control panels, and switchboards.
Is the NGG3B045L circuit breaker HACR rated?
Yes, Siemens NGG frame circuit breakers are HACR rated, making them suitable for heating, air conditioning, and refrigeration equipment protection.
Can this breaker be used in DC voltage applications?
Yes, the NGG3B045L is rated for 125/250VDC applications with an interrupting capacity of 14kAIC.
Is the NGG3B045L suitable for reverse feed applications?
Yes, Siemens NGG frame molded case circuit breakers are suitable for reverse feed installations.
Can this breaker replace older ITE NGG models?
Yes, Siemens acquired ITE, and the NGG3B045L directly replaces older ITE NGG3B045L circuit breakers with the same physical dimensions and electrical specifications.
What safety precautions are required when installing the NGG3B045L?
Always de-energize the panel or switchboard before installation. Verify that the power is completely disconnected using a properly rated voltage sensing device to prevent electrical shock and arc flash hazards.
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