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Siemens B340HH Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Siemens
B340HH
Molded Case Circuit Breaker
Brand
Siemens
SKU
B340HH
Quantity
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Siemens B340HH - 40A 3 Pole Molded Case Circuit Breaker
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Description
Built for high-fault commercial applications, the Siemens B340HH is a 3-pole, 40A molded case circuit breaker. It provides reliable thermal-magnetic protection for 240VAC electrical distribution systems. This HBL series bolt-on MCCB is engineered to fit seamlessly into Siemens P1, P2, and P3 panelboards, accepting 8-6 AWG copper wiring. Featuring a robust 65 kAIC interrupting rating at 240V, this breaker safely handles severe fault currents. It is fully HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | B340HH |
| Series | HBL |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| 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, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Trip-Free Mechanism, Common Trip |
Product FAQs
5 answersWhich Siemens panelboards accept the B340HH circuit breaker?
This bolt-on breaker is designed exclusively for Siemens P1, P2, and P3 panelboards. It will not fit in standard residential load centers that require plug-on connections.
What does the HH suffix indicate on the B340HH catalog number?
The HH suffix designates this as an HBL type breaker with an extra-high interrupting rating of 65kA at 240VAC. For comparison, standard BL breakers are rated at 10kA, and BLH variants with a single H suffix are rated at 22kA.
Is the B340HH breaker HACR rated?
Yes, this breaker carries an HACR rating, making it approved for protecting heating, air conditioning, and refrigeration equipment circuits.
Is the Siemens B340HH suitable for reverse feed applications?
Yes, this thermal-magnetic breaker is approved for reverse feeding. It does not have dedicated line and load markings, allowing it to be back-fed in compatible panelboard configurations.
What safety standards does the B340HH meet?
This breaker is UL 489 listed, which is the standard for molded case circuit breakers used in commercial and industrial electrical distribution systems.
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