Professional 630A 3-pole changeover switch with moulded case design, knife-type contacts, and dual-break configuration for industrial switching and motor control applications.
The Legrand DCX-M changeover switch is a professional-grade moulded case switching device designed for heavy-duty industrial applications. This Size 4 model features a 630A rated current capacity with 3-pole configuration and I-O-II handle operation, making it ideal for main switching, maintenance, service, safety, and reversing switch applications. The device is constructed with non-flammable glass fibre reinforced polyester frame parts that provide exceptional mechanical and electrical track resistance combined with low water absorption, ensuring reliable performance in demanding environments.
This changeover switch incorporates advanced knife-type contacts with self-wiping action on contact surfaces, delivering superior performance under heavy starting currents and short-circuit conditions. The design features four breaking points per pole with two double-break contacts per pole, providing enhanced safety and reliability. With a maximum rated operation voltage of 1000V AC and rated operating voltage range of 400-1000V, this switch is suitable for a wide range of industrial applications including motor control, power distribution, and emergency switching scenarios.
The DCX-M series complies with IEC EN 60947-3 standards and is certified for distribution board installation. It features bolt-type electrical connections for the main circuit, a long rotary handle control element with black colour, and IP2X degree of protection on the front side. With auxiliary contacts (2 normally closed and 2 normally open), this switch provides comprehensive control and signalling capabilities for complex industrial control systems.
Key Features
- Moulded case design with non-flammable glass fibre reinforced polyester for high mechanical and electrical resistance
- Knife-type contacts with self-wiping action ensuring reliable performance under heavy starting currents and short-circuit conditions
- Four breaking points per pole with dual double-break contacts for enhanced safety and reliability
- Rated for 630A continuous current with maximum 1000V AC operation voltage and 400-1000V operating range
- Compliant with IEC EN 60947-3 standards with auxiliary contacts for comprehensive control and signalling capabilities
Technical Specifications
| Specification |
Value |
| Product Type | Changeover Switch (Moulded Case) |
| Size | 4 |
| Number of Poles | 3 Pole (3P) |
| Rated Permanent Current | 630 A |
| Maximum Rated Operation Voltage | 1000 V AC |
| Rated Operating Voltage Range | 400-1000 V |
| Rated Short-time Withstand Current | 13 kA |
| Rated Operation Power at AC-23, 400V | 250 kW |
| Conditioned Rated Short-circuit Current | 20 kA |
| Handle Type | Long Rotary Handle (I-O-II) |
| Auxiliary Contacts | 2 Normally Closed, 2 Normally Open |
| Main Circuit Connection | Bolt Connection |
| Degree of Protection (Front) | IP2X |
| Control Element Color | Black |
| Frame Material | Non-flammable Glass Fibre Reinforced Polyester |
| Contact Type | Knife-type with Self-wiping Action |
| Breaking Points per Pole | 4 (Two Double-break Contacts) |
| Standards Compliance | IEC EN 60947-3 |
| Installation Type | Distribution Board Installation |
| Reference Number | 431109 |
| EAN Code | 3245064311090 |
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