Heavy-Duty DC Contactor for Crane Applications — GSZ2-400S / MZJ-400A/006
Product Overview
This heavy-duty DC contactor is designed for high-current switching applications in cranes and other industrial equipment. The product is available under two equivalent supplier model references: GSZ2-400S and MZJ-400A/006. These two model numbers identify the same product configuration supplied by different manufacturers.
The contactor uses a 24V DC coil and has a 400A rated current, making it suitable for demanding DC power-control circuits. The product label also identifies compliance with GB/T 14048.4 and IEC 60947-4-1. One product label specifies a 690V rated insulation voltage and DC-1: 48V, 400A contact application.
Before ordering, please compare the original contactor model, coil voltage, terminal arrangement, mounting dimensions and wiring diagram with the existing unit.
Applicable Equipment: Crane and industrial DC power-control systems
Compliance: GB/T 14048.4; IEC 60947-4-1
Key Features
High-current 400A switching capacity for demanding DC applications.
24V DC coil suitable for common crane control circuits using a 24V control supply.
GSZ2-400S and MZJ-400A/006 provided as equivalent supplier model references.
Supports reliable switching and isolation of DC power circuits.
Suitable for replacement, repair and preventive maintenance of crane electrical systems.
Application
The DC contactor can be used in crane electrical control and high-current DC switching circuits. It is suitable for maintenance and replacement projects where the original unit matches the GSZ2-400S or MZJ-400A/006 configuration, including the 24V DC coil and 400A current rating.
Replacement and Ordering Notes
Please confirm the following before purchase:
Original model number: GSZ2-400S or MZJ-400A/006.
Coil voltage: 24V DC.
Rated current: 400A.
Contact application and wiring configuration.
Terminal arrangement and mounting dimensions.
Equipment nameplate and installation requirements.
The two model references are treated as the same product configuration supplied by different manufacturers. Final compatibility should be verified against the original contactor and equipment documentation.
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