Siemens NEG3B080L Molded Case Circuit Breaker
- 80A
- 3 Pole
- Unit Mount
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Siemens NEG3B080L - 80A 3 Pole Molded Case Circuit Breaker
New
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Description
Engineered for commercial and industrial power distribution, this 80A thermal-magnetic breaker provides reliable long-time and instantaneous protection. It installs into Siemens P4 and P5 panelboards, switchboards, and VL series enclosures, coming complete with TA1EG10 line and load lugs. While the original VL series is transitioning to the newer 3VA5180-5EC31-0AA0, this exact match maintains your existing switchgear configuration without requiring retrofit mounting kits.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NEG3B080L |
| Series | NEG |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 30kA @ 250VDC, 30kA @ 500VDC |
| Frame Type | NEG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P4 Panelboards, Siemens P5 Panelboards, Siemens Switchboards, Siemens VL Enclosures |
| Wire Gauge | 8 AWG - 1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs Included (TA1EG10) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip Unit, Trip-Free Mechanism |
Product FAQs
7 answersWhich Siemens panelboards and enclosures are compatible with the NEG3B080L?
This breaker is designed for use in Siemens P4 and P5 panelboards, Siemens switchboards, and Siemens VL series enclosures.
What type of mounting does the NEG3B080L require?
It is a unit mount, feed-thru circuit breaker. This means it bolts directly to the mounting pan or enclosure rather than plugging into or bolting onto a panelboard busbar system.
What wire sizes are accepted by the lugs on this breaker?
The factory-installed lugs accept wire gauges from 8 AWG up to 1/0 AWG. They are rated for both copper (Cu) and aluminum (Al) conductors.
How does the trip unit function on the NEG3B080L?
It features a thermal-magnetic trip unit with fixed thermal and adjustable magnetic settings. The fixed thermal element provides standard overload protection, while the adjustable magnetic dial allows you to set the specific instantaneous short-circuit trip threshold.
Is the NEG3B080L suitable for direct current (DC) systems?
Yes, this breaker is rated for DC applications. It provides a 30kA interrupting capacity at both 250VDC and 500VDC.
Does the NEG3B080L include ground fault equipment protection?
No. This breaker is equipped with an LI (Long-Time and Instantaneous) trip unit. It does not include the Ground Fault (G) function required for equipment protection.
What breaker family does the NEG3B080L belong to?
It is part of the Siemens SENTRON VL frame group, specifically the NEG frame. When sourcing accessories like shunt trips or auxiliary switches, ensure they are compatible with Siemens VL series breakers.
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