Switching components · QCDL (VS1)
Indoor vacuum
circuit breaker
QCDL(VS1)-12 for 12kV indoor switchgear. Match the breaker to your panel, control requirements and installation interface.
Start with your country and the breaker you need. Detailed drawings can follow.
Reference model specifications
The following declared ratings identify the QCDL(VS1)-12/1250-31.5 sample in report SL2024/0160-01. Confirm the required project duty during selection.
| Item | Value |
|---|---|
| Model | QCDL(VS1)-12 |
| Rated Voltage | 12 kV |
| Rated Current | 1250 A |
| Frequency | 50 Hz |
| Short-Time Withstand Current | 31.5 kA / 4 s |
| Peak Withstand Current | 80 kA |
The report covers insulation-performance testing. It does not document short-circuit breaking capacity or mechanical endurance.
Match the breaker to your switchgear
Mechanical interface
Confirm fixed or withdrawable installation, pole pitch, contact arms, chassis and cabinet dimensions.
Control & operation
Specify control voltage, closing and tripping requirements, auxiliary contacts and the secondary connector.
Duty & coordination
Provide system ratings, required breaking duty, operating sequence and the protection requirements.
Technical documents & model evidence
Report SL2024/0160-01: insulation-performance test items for QCDL(VS1)-12/1250-31.5. Confirm the applicable standard, rating and document scope for your procurement requirements.
QCDL (VS1) questions
What do you need to select a QCDL (VS1) breaker?
Start with rated voltage, current, required duty and quantity. For matching, share the switchgear drawing, fixed or withdrawable arrangement, pole pitch, control voltage and secondary interface.
Does the listed report prove short-circuit breaking capacity?
No. Report SL2024/0160-01 covers insulation-performance test items for the submitted QCDL(VS1)-12/1250-31.5 sample. The listed 31.5 kA / 4 s is a declared short-time withstand rating, not a breaking-test result.
Can I enquire without a finished drawing?
Yes. Send the product name, country and what the breaker will be used for. The interface and technical details can be clarified afterwards.
Related product families
Tell us what you need
A product name, your country and a short question are enough to start. If you have a drawing or specification, we can review it with you.