Siemens B290H00S01 Molded Case Circuit Breaker
- 90A
- 2 Pole
- Bolt-On
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Siemens B290H00S01 - 90A 2 Pole Molded Case Circuit Breaker
New
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Description
Built for demanding environments, the Siemens B290H00S01 is a 90A, two-pole MCCB. It includes a factory-installed 120VAC shunt trip for reliable remote circuit disconnection. The breaker features a robust bolt-on mounting configuration. It is compatible with Siemens P1, P2, and P3 panelboards, and serves as a substitute for BAB2090H and QOB290VH breakers. With a 22kAIC rating at 120/240VAC, this thermal-magnetic breaker safely clears faults. It is HACR rated and accepts up to 1/0 AWG wiring.Specifications
| Brand | Siemens |
|---|---|
| Series | B |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 4-1/0 AWG (Cu), 2-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG (Cu), 2 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the 00S01 suffix indicate on the B290H00S01 breaker?
The 00S01 suffix denotes a factory-installed 120V AC shunt trip. This accessory allows the breaker to be tripped remotely via a 120V control signal, which is frequently required for emergency shutdown circuits or automated control systems.
Which panelboards are compatible with this B-frame breaker?
The B290H00S01 is designed for bolt-on installation in Siemens P1, P2, and P3 panelboards. It secures directly to the panelboard bus, providing a rigid and reliable connection for commercial and industrial distribution.
What is the standard version of this breaker without the shunt trip accessory?
If your application does not require remote tripping capabilities, the base breaker is the Siemens B290H. Both models share the same BLH type frame and 22kAIC high-interrupting rating.
What are the acceptable wire sizes and materials for the terminal lugs?
The factory lugs accept both copper (Cu) and aluminum (Al) conductors. The supported wire range is 4 AWG to 1/0 AWG for copper, and 2 AWG to 1/0 AWG for aluminum. Always apply an approved oxide inhibitor when terminating aluminum wiring.
How does the BLH type differ from standard BL breakers?
The H in the B290H catalog number designates it as a BLH type breaker, which features a high interrupting capacity. It provides a 22kAIC rating at 120/240VAC, whereas standard BL type breakers are typically rated for 10kAIC.
How does the thermal-magnetic trip unit operate during a fault?
The fixed thermal-magnetic trip unit provides dual protection. The thermal element (Long-Time) protects against sustained overloads by heating a bimetallic strip, while the magnetic element (Instantaneous) trips the breaker immediately in the event of a severe short circuit.
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