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Siemens B225HH Molded Case Circuit Breaker
- 25A
- 2 Pole
- Bolt-On
Siemens
B225HH
Molded Case Circuit Breaker
Brand
Siemens
SKU
B225HH
Quantity
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Siemens B225HH - 25A 2 Pole Molded Case Circuit Breaker
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Description
Designed for heavy-duty commercial environments, this 25-amp HBL-series breaker provides exceptional fault clearing with an extra-high 65kAIC rating at 120/240VAC. The device bolts firmly into Siemens P1, P2, P3, P4, and P5 panelboards, ensuring a stable connection for critical power distribution. Utilizing a quick-make, quick-break mechanism, it offers reliable thermal-magnetic protection and carries an HACR rating for safe operation with heating and air conditioning loads.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B225HH |
| Series | HBL |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120/240VAC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 10-6 AWG (Cu), 10-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 10 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, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
7 answersWhich panelboards are compatible with the Siemens B225HH circuit breaker?
The B225HH is a bolt-on breaker designed specifically for Siemens P1, P2, P3, P4, and P5 panelboards. Because it requires a bolted connection to the busbar, it cannot be used in standard residential load centers that accept plug-in style breakers.
What does the "HH" in the B225HH catalog number indicate?
The "HH" suffix designates an extra-high interrupting rating of 65kAIC at 120/240VAC. This provides higher fault current protection compared to the standard B225 or the high-interrupting B225H.
Can the B225HH replace a standard B225 or B225H breaker?
Yes. The B225HH shares the same physical B-frame dimensions and bolt-on mounting as the standard B225 (10kAIC) and B225H (22kAIC). It can be used as a direct replacement when a higher 65kAIC interrupting rating is required by the system design.
How do the B-frame, BL series, and HBL type designations relate to this breaker?
The B225HH is built on the Siemens B-frame architecture and belongs to the BL series of molded case circuit breakers. The HBL type designation specifically indicates that this is the extra-high interrupting (65kAIC) bolt-on version within that series.
How does the B225HH connect to the panelboard bus?
It features a bolt-on connection, meaning it fastens directly to the panelboard busbars using screws. This provides a secure, vibration-resistant mechanical and electrical connection suitable for commercial and industrial panelboards.
What wire sizes and materials are accepted by the lugs on the B225HH?
The factory-installed load lugs accommodate 10 AWG to 6 AWG wire. They are dual-rated for use with either copper (Cu) or aluminum (Al) conductors.
What type of trip unit is equipped on the B225HH?
This breaker utilizes a fixed thermal-magnetic trip unit providing long-time and instantaneous (LI) protection. The thermal and magnetic trip points are factory set and non-adjustable.
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