SIEMENS
SIEMENS BQD330 30 A 3-Pole 480 V AC Bolt-On Circuit Breaker
A three-pole bolt-on breaker rated 30 A at 480 V AC with a 14 kA interrupting capacity for Siemens P1 panelboards
- TypeCircuit Breakers
- Protects three-phase circuits with 30 A rating
- Handles up to 480 V AC for industrial panels
- Bolt-on mounting fits Siemens P1 panelboards directly
- 14 kA interrupting capacity at 480 V AC
- Operates up to 104 °F in standard enclosures
Three-Pole 480 V AC Breaker
The Siemens BQD330 is a 30 A miniature circuit breaker rated for 480 V AC three-phase systems. It carries a 14 kA interrupting rating at that voltage and fits a 100 A BQD frame size. The toggle actuator provides clear on-off indication for panel operators.
Bolt-On Mounting for P1 Panelboards
The bolt-on mounting style secures the breaker directly to Siemens P1 panelboard bus bars, removing the need for plug-in stabs. Lug terminals accept standard copper or aluminium conductors for straightforward wiring. Three poles occupy a single 100 A frame footprint, leaving adjacent space for additional branch devices.
Sustained Load Behaviour
The breaker is calibrated for a maximum operating temperature of 104 °F, so continuous 30 A loading remains within thermal limits inside a ventilated enclosure. The 14 kA AIR rating ensures reliable fault interruption even after extended service periods. Physical dimensions of 4.49 in length, 3.0 in width and 2.7 in depth allow predictable heat dissipation in dense panel layouts.
Highlights
- Protects three-phase circuits with 30 A rating
- Handles up to 480 V AC for industrial panels
- Bolt-on mounting fits Siemens P1 panelboards directly
- 14 kA interrupting capacity at 480 V AC
- Operates up to 104 °F in standard enclosures
Specifications
| Brand | Siemens |
|---|---|
| Model | BQD330 |
| Type | Circuit Breakers |
Questions about this item
What is the maximum interrupting rating of the BQD330 at 480V AC?
The BQD330 has a maximum AIR rating of 14kA at 480V AC, which is the limit that determines its ability to safely interrupt fault current under sustained use.
What is the maximum operating temperature for this breaker during continuous operation?
The maximum operating temperature is 104 degrees Fahrenheit, indicating the thermal limit the breaker can withstand while running all day.
Which panelboard series is required for the BQD330 bolt-on mounting style?
This breaker is compatible with Siemens P1 panelboards, so the buyer must already own a P1 series panelboard for the bolt-on connection to work.
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