Siemens NEG3B020L Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Quantity
Siemens NEG3B020L - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Operating within the VL Series family, the Siemens NEG3B020L is a 3-pole, 20A MCCB. Equipped with a fixed thermal-magnetic trip unit, it provides essential long-time and instantaneous protection. This EG Frame device mounts into compatible Siemens panelboards and enclosures. While succeeded by the 3VA5120-5ED31-0AA0, it serves as an exact match for expanding existing infrastructure. With a 35kAIC rating at 480VAC, the breaker is current limiting, HACR rated, and accommodates reverse feed.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NEG3B020L |
| Series | NEG |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 30kA @ 500VDC |
| Frame Type | NEG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens VL Series Enclosures, Panelboards, Switchboards |
| Wire Gauge | 8 AWG - 1/0 AWG (Cu), 8 AWG - 2/0 AWG (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, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
5 answersWhat types of equipment are compatible with the NEG3B020L breaker?
This SENTRON series breaker is designed for use with Siemens VL Series enclosures, panelboards, and switchboards.
What wire sizes are accepted by the standard lugs on this breaker?
The factory-installed lugs accept 8 AWG to 1/0 AWG copper wire, or 8 AWG to 2/0 AWG aluminum wire.
How is the NEG3B020L mounted within a panel?
This is a unit mount, feed-thru circuit breaker. It bolts directly to the chassis or mounting plate rather than plugging into a busbar.
Can this Siemens NEG frame breaker be used in DC applications?
Yes, it is rated for use in direct current systems up to 500VDC, with a maximum interrupting capacity of 30kAIC at that voltage.
Are the thermal and magnetic trip settings adjustable on this model?
No, the NEG3B020L features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection without adjustable dials.
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