BQD140 - 40Amp Circuit Breaker
- 40 Amp
- 14k @ 277VAC
- 1 Pole
Purchase Options: New In Box
BQD140 - 40Amp Circuit Breaker Description
BQD140 - 40Amp Circuit Breaker
The Siemens BQD140 is a 40-amp, single-pole breaker that protects circuits from overloads and short circuits. It’s made for panelboard use and fits neatly in tight spaces. The thermal magnetic trip reacts to long-term overloads and sudden faults, helping you prevent damage to wiring and equipment without causing unnecessary shutdowns. Rated for 277VAC with a 14 kAIC interrupting capacity, the BQD140 works well in lighting panels, control panels, and other low-voltage systems. Electricians and facility teams trust it for everyday circuit protection that keeps your systems running safely.
Key Features and Benefits
- 40 Amp rating for branch circuits
- Single-pole design for 277VAC systems
- Thermal magnetic trip for overload and short-circuit protection
- 14 kAIC interrupting capacity
- Panelboard mounting for easy installation
- Molded case for durability
- Low-tab connections for secure wiring
- Protects wiring, circuits, and equipment
Technical Specifications
- Catalog Number: BQD140
- Manufacturer: Siemens
- Series: BQD
- Poles: 1
- Amp Rating: 40 Amps
- Voltage Rating: 277 VAC
- Frequency: 50/60 Hz
- Interrupting Rating: 14 kAIC
- Trip Unit: Thermal Magnetic
- Mounting Style: Panelboard
- Connection Type: Low Tab
- Frame Size: 100A
- Width: 3 in. | Height: 1 in. | Depth: 4 in.
- Enclosure Material: Molded Case
- Max Operating Temp: 40°C
- Net Weight: 0.549 lb
Material Compliance and Certifications
- UL 489 Listed
- CSA C22.2 Certified
- RoHS Compliant
- WEEE Compliant
- REACH Information Available
Where It Works Best
- The BQD140 is commonly used in offices, schools, commercial buildings, retail spaces, healthcare facilities, and industrial settings.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Width:1.0
- Height:4.49
- Depth:2.7
- Poles:1
- Amperes:40
- A.I.C. Rating & Volts:14k @ 277VAC
- Type:BQD
- Approx Dimensions:1.00"W x 4.49"L x 2.70"D
- Additional Notes:40°C, HACR rated, Molded Case Circuit Breaker, Bolt-On
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You may return unused items within 30 days of delivery for a full refund.
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