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Rail stations and transit: maintenance power without compromising public safety

Platforms, maintenance depots and depots need connections that are adequate and mistake-proof. Why interlocked, higher-IP devices come first in public areas, and what a depot typically needs.

A transit site has two kinds of space: public areas the passengers see (platforms, walkways) and working areas (maintenance depots, vehicle depots). Both share one requirement: they must not be operated by mistake.

Public areas: lockable, not pullable

Maintenance sockets on platforms and walkways are staff-managed and should not be usable by the public. Switched + mechanically interlocked models cannot be unplugged without switching off, and are easy to lock.

Depots: several circuits, full protection

A depot feeds many loads (lighting, tools, test benches, temporary welding), so a socket combination suits best: one incoming feed, several outgoing circuits, Type A residual current protection, and simple management.

Area	Models
Public / controlled areas	5112A (63A DUO interlock) · 5604407G (32A IP67/IP69 DUO)
Depot multi-circuit distribution	1420 (2×16A + 1×32A) · 920009 (Type A RCD)
Temporary / portable power	90839 (DELTA-BOX, cable clamp and hook)

Reference: the MENNEKES rail station solution.

Related: choosing a socket combination

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