Three-phase contactor for capacitor control for a maximum power of 16kVar (400Vac) with coil at 400vas used in power factor correction systems. The contactor mounts a preload unit on the front of the contactor. it also has 2 auxiliary contacts, with an open CONTACT NA and another closed NC.
This preload unit contactor prevents the destruction of contactor contacts due to the transient overcurrent produced by the capacitors.
Contactor Reference: MC-18b AC400Vac
Preload unit: AC-9
Technical details:
- Manufacturer: LS (LG Industrial Systems).
- Contactor Reference: MC-18b AC400Vac 50/60Hz 1a1b 3P
- Preload unit reference: AC-9.
- Maximum operating voltage: 400-440Vac.
- Coil voltage: 400Vac.
- Number of contactor poles: 3.
- Assigned current for contactor in AC3: 18A.
- Current assigned for contactor in AC1 (Ith): 32A.
- Maximum current per set: 24A.
- Maximum peak current: 850A.
- Maximum power (kVar) 380-400Vac: 16.7.
- Maximum power (kVar) 220-230Vac: 8.5.
- Maximum residual voltage in the contacts: ≤50V.
- Maximum number of maneuvers per hour: 240.
- Electrical power: 200,000 maneuvers.
- Auxiliary contacts: 2 sides (1 open and 1 closed)
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