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BQD350
The BQD350, a molded case circuit breaker from Siemens’ BQD series, is designed to ensure reliable current protection. Rated for 50 amps with a voltage capacity of 480 volts AC, it features a durable 3-pole design.
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Technical specifications for BQD350
| Manufacturer | Siemens |
|---|---|
| Product Type | Molded Case Circuit Breaker |
| Product Line | BQD Series |
| Part Number | BQD350 |
| UPC | 783643277410 |
| Weight | 2.00 lbs (0.91 kg) |
| Pole | 3-Pole |
| Rated Current | 50 Amps |
| Voltage Rating | 480 Volts AC |
| Interrupting Capacity | 14kA |
| Trip Curve Type | Type B |
| Frequency | 60 Hz |
| Mounting | Panelboard mounting |
| Terminal Type | Screw-type terminals |
| Terminal Torque | 2.8 Nm |
| Operating Temperature Range | -40°C to +70°C |
| Wire Size | 14 AWG |
| Trip Range | Thermal Magnetic |
| Handle | Toggle switch with ON, OFF, and TRIP positions |
The Siemens BQD350 is a robust molded case circuit breaker designed for high-performance applications. Rated at 50 amps, it provides reliable circuit protection for systems operating at 480 volts AC. This unit features a three-pole configuration, making it suitable for various electrical setups.
With an impressive interrupting capacity of 14 kA, the BQD350 is capable of handling significant fault current levels for critical safety. This circuit breaker adheres to a 60 Hz operational frequency. The trip curve type is designated as Type B, useful for ensuring the reliable operation of the breaker within its rated specifications.
Installation of the BQD350 is straightforward, as it is designed for mounting in panelboards. The physical dimensions of this model are compact, measuring 1 inch in width, 3.5 inches in height, and 2.5 inches in depth. It utilizes screw-type terminals for secure wire connections, accommodating wire sizes up to 14 AWG. The terminal torque specification is rated at 2.8 Nm, ensuring stable connections under load.
The operating temperature range for this breaker spans from -40°C to +70°C, making it suitable for diverse environmental conditions. The BQD350 employs a thermal magnetic trip range, which allows it to react appropriately to overload and short circuit conditions, thereby protecting circuitry. For user convenience, the handle is designed as a toggle switch allowing users to easily switch between ON, OFF, and TRIP positions.
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