The Schneider Electric MGP6303NATX is a PowerPact 4 series 3-pole switch disconnector rated at 630 A continuous current at 415 V AC. It's designed for isolation duty in 400/630 A panelboards, with a toggle control and top-entry connections. The AC-22A and AC-23A utilisation categories tell you it handles mixed resistive-inductive loads and motor switching — not just a simple disconnect. The key spec for fit is the 630 A rated current (In) at 415 V AC — that's the continuous current it carries without exceeding temperature limits. The short-time withstand current (Icw) of 6000 A for 1 second and 2320 A for 20 seconds tells you how much fault current the switch can ride through before the upstream protection clears it. That's your selectivity coordination number. It's certified for isolation per BS EN 60947-3, with a visible contact position indicator — so when you open it, you see the gap.
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The MGP6303NATX is a backplate-mount switch disconnector — not DIN rail. It measures 255 mm high by 140 mm wide by 110 mm deep, so plan for dedicated panel real estate with top-entry cable access. The IP40 enclosure protection means it's indoor-only, no washdown exposure. IK07 impact rating handles light mechanical shock. Class II double-insulated construction means no earth connection required for the switch body itself. The 8 kV rated impulse withstand voltage (Uimp) gives you confidence against switching surges on a 415 V system. Mechanical durability is 15000 cycles. That's a solid duty cycle for a main isolator in a panelboard — not a daily-switched load break device, but fine for infrequent isolation.
Approvals and standards
The MGP6303NATX carries BS EN 60947-3 certification for switch-disconnectors, with confirmed suitability for isolation. It also complies with EN/IEC 60664-1 for insulation coordination at pollution degree 3.