Siemens NEG2B100L Molded Case Circuit Breaker
- 100A
- 2 Pole
- Unit Mount
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Siemens NEG2B100L - 100A 2 Pole Molded Case Circuit Breaker
New
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Description
Engineered for commercial and industrial applications, the Siemens NEG2B100L is a 2-pole, 100A MCCB from the VL Series. It utilizes a thermal-magnetic trip unit to provide precise long-time and instantaneous protection. This EG Frame breaker installs into Siemens VL Series enclosures and panelboards. Though replaced by the 3VA5110-5ED21-0AA0, it remains essential for maintaining existing infrastructure. Rated 35kAIC at 480VAC, it features a current-limiting design and HACR certification.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NEG2B100L |
| Series | NEG |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 30kA @ 250VDC |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs Included |
| 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, Current Limiting, Reverse Feed |
Product FAQs
7 answersDoes the NEG2B100L come with lugs, and what wire sizes do they accept?
Yes, the L suffix in the NEG2B100L catalog number indicates it includes factory-installed line and load lugs. These lugs accept 8 AWG to 1/0 AWG copper conductors or 8 AWG to 2/0 AWG aluminum conductors.
Where can the NEG2B100L circuit breaker be installed?
This unit mount breaker is designed for installation in Siemens VL Series enclosures, as well as compatible Siemens panelboards and switchboards. It bolts directly to the mounting surface or backpan.
How does the trip unit on the NEG2B100L operate?
It features a thermal magnetic trip unit with fixed long-time thermal protection for overloads and adjustable instantaneous magnetic protection. This allows you to fine-tune the short-circuit response for your specific application.
Can the NEG2B100L be used in DC power applications?
Yes, this breaker is rated for DC applications up to 250VDC, providing an interrupting capacity of 30kA at that voltage.
What frame size does the NEG2B100L belong to?
The NEG2B100L is part of the Siemens SENTRON family and uses the NEG frame, which falls under the broader VL frame group of molded case circuit breakers.
Does this breaker mount to a DIN rail or plug into a busbar?
No. The NEG2B100L is a unit mount, feed-thru circuit breaker. It is designed to be bolted directly to a mounting surface or enclosure backpan rather than plugging into a busbar or snapping onto a DIN rail.
What does the 35kAIC rating at 480V mean for the NEG2B100L?
The 35kAIC rating indicates the maximum fault current the breaker can safely interrupt at 480V AC without sustaining damage. It is critical to verify that the available fault current at your installation point does not exceed this value.
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