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Siemens HEB2B090B Molded Case Circuit Breaker
- 90A
- 2 Pole
- Bolt-On
Siemens
HEB2B090B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HEB2B090B
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Siemens HEB2B090B - 90A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial applications, the Siemens HEB2B090B is a 90A, 2-pole MCCB from the Sentron HEB frame group. It offers fixed thermal-magnetic trip functions (LI) to safeguard electrical systems. The breaker utilizes a bolt-on mounting style for secure installation into Siemens P3, P4, and P5 panelboards. This model is the predecessor to the newer HEG2B090B replacement breaker. It provides a high interrupting capacity of 65kAIC at 480VAC and is fully HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HEB2B090B |
| Series | HEB |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 42kA @ 250VDC |
| Frame Type | HEB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs (3TA1EG10) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhich Siemens panelboards accept the HEB2B090B circuit breaker?
This bolt-on breaker is designed specifically for installation in Siemens P3, P4, and P5 series panelboards.
What wire sizes are compatible with the terminal lugs on this breaker?
The included lugs accept 14 to 1/0 AWG copper (Cu) wire or 12 to 1/0 AWG aluminum (Al) wire.
Is the HEB2B090B rated for direct current (DC) systems?
Yes, this breaker is rated for use in DC applications up to 250VDC, where it provides an interrupting rating of 42kA.
How does the HEB frame differ from the standard NEB frame?
The HEB frame is the high-interrupting version within the Siemens Sentron NEB/HEB family. It delivers a 65kAIC rating at 480VAC, which is higher than the standard NEB frame capacity.
Can the trip settings on the HEB2B090B be adjusted in the field?
No, this model features a fixed thermal magnetic trip unit. Both the long-time overload and instantaneous short circuit trip functions are factory set and non-adjustable.
What type of protection does the LI trip function provide?
The LI designation stands for Long-Time and Instantaneous. The long-time thermal element protects against sustained overloads, while the instantaneous magnetic element trips immediately during a short circuit.
Does this breaker snap into the panelboard bus?
No, the HEB2B090B uses a bolt-on connection type. It must be securely bolted directly to the bus bars within compatible commercial or industrial panelboards.
Can this 2-pole breaker be used in a single-phase system?
Yes, 2-pole breakers like the HEB2B090B are commonly used to provide 240V power in single-phase systems or to feed 2-pole loads in three-phase systems.
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Customers rate this product 4.0 out of 5 based on 1 review.
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- JJohnReviewingSiemens HEB3B015B - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars9/19/234 Stars
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