Siemens BDQ120 Circuit Breaker
$50.00
The Siemens BQD120 is a Type BQD molded case circuit breaker rated for 20 A across a single pole. It provides a 14 kA RMS symmetrical interrupting rating at 277 V AC and uses thermal-magnetic trip for overload and short-circuit protection.
1 in stock
Description
- Thermal-Magnetic Trip: Protects against overload and short-circuit faults.
- High Interrupting Capacity: Interrupts up to 14 kA RMS symmetrical.
- Single-Pole Design: Occupies one pole per circuit.
- Dual Voltage Rating: Supports 277 V AC and 125 V DC.
- Continuous Current Rating: Carries 20 A at 40 °C.
Documentation
Technical Specifications
| Manufacturer | Siemens |
|---|---|
| Part Number | BDQ120 |
| Type | Circuit Breaker |
| Series | BQD |
| Current Rating | 20 A at 40 °C (Continuous) |
| Poles | 1 |
| Voltage | 277 V AC / 125 V DC |
| Interrupting Rating | 14 kA RMS symmetrical |
| Trip Type | Thermal/Magnetic |
| Frequency | 50/60 Hz |
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Description
The Siemens BQD120 is a Type BQD molded case circuit breaker designed to protect single-pole circuits against overload and short-circuit conditions. It carries a continuous current rating of 20 A at 40 °C and operates across AC and DC systems, rated for 277 V AC and 125 V DC.
A thermal-magnetic trip mechanism responds to sustained overloads through its thermal element and to instantaneous short circuits through its magnetic element. It delivers a 14 kA RMS symmetrical interrupting rating at 277 V AC for fault currents on 50/60 Hz systems, and its single-pole molded case construction supports both AC and DC applications.
Frequently Asked Questions
What is the interrupting rating of the BQD120?
The BQD120 provides a 14 kA RMS symmetrical interrupting rating at 277 V AC on 50/60 Hz systems.
How many poles does it have and what current does it carry?
It is a single-pole breaker with a continuous current rating of 20 A at 40 °C.
What type of trip mechanism does the BQD120 use?
It uses a thermal-magnetic trip, with a thermal element for overloads and a magnetic element for short-circuit faults.
