1. Electrical parameters of the main circuit:
Rated voltage: 7.2kV (50Hz three-phase AC)
Rated working current: 250A
Usage category: AC-3 (frequent start stop of high-voltage motor), AC-6b (switching of high-voltage capacitor bank)
Rated short-time withstand current: 4kA/4s
Rated peak withstand current: 10kA
Power frequency withstand voltage: phase to phase/ground 42kV, fracture 48kV
Resistance of each phase circuit in the main circuit: ≤ 200 μ Ω
2. Mechanical characteristic parameters:
Contact opening distance: 4 ± 0.5mm
Contact overtravel: 1.5 ± 0.3mm
Rated operating frequency: 300 times/hour
Mechanical lifespan: ≥ 300000 cycles
AC-3 electrical lifespan: ≥ 250000 cycles; AC-4 electrical lifespan: ≥ 100000 cycles
Three phase closing asynchrony: ≤ 3ms
Closing bounce time: ≤ 10ms
3. Control circuit (Z-mechanical holding type):
Control coil conventional voltage: AC220V, DC220V (customizable 110V)
Closing only provides instantaneous power, relying on mechanical buckles to maintain the closing position; Opening requires the release coil to be powered on for unlocking
Auxiliary contacts: standard 4 normally open and 4 normally closed, rated 5A/AC220V
Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A Specifications
| Rated voltage | 7.2kV (50Hz three-phase AC) |
|---|---|
| Rated working current | 250A |
| Usage category | AC-3 (frequent start stop of high-voltage motor), AC-6b (switching of high-voltage capacitor bank) |
| Rated short-time withstand current | 4kA/4s |
| Rated peak withstand current | 10kA |
| Power frequency withstand voltage | phase to phase/ground 42kV, fracture 48kV |
| Contact opening distance | 4 ± 0.5mm |
| Contact overtravel | 1.5 ± 0.3mm |
| Rated operating frequency | 300 times/hour |
| Mechanical lifespan | ≥ 300000 cycles |
| AC-3 electrical lifespan | ≥ 250000 cycles; AC-4 electrical lifespan: ≥ 100000 cycles |
| Three phase closing asynchrony | ≤ 3ms |
| Closing bounce time | ≤ 10ms |
| Control coil conventional voltage | AC220V, DC220V (customizable 110V) |
| Auxiliary contacts | standard 4 normally open and 4 normally closed, rated 5A/AC220V |
About the Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A
The Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A is a electrical products used in industrial automation, control and power systems. It is rated at Rated voltage 7.2kV (50Hz three-phase AC), Rated working current 250A, Usage category AC-3 (frequent start stop of high-voltage motor), AC-6b (switching of high-voltage capacitor bank). This electrical products is supplied as new, original industrial-grade stock. Each unit is identified by manufacturer part number Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A for accurate procurement and cross-referencing.
Why source the Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A from HDE123
- Verified part number: every Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A is checked against its manufacturer specification before shipment.
- 15 confirmed technical parameters available on this page for engineering review.
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Ordering the Indoor three-phase high-voltage AC vacuum contactor，JCZ5A(Z)-250A
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