What Is a DIN-Rail Energy Meter?

A DIN-rail energy meter snaps onto a standard 35 mm DIN rail inside a distribution box — the same rail that holds miniature circuit breakers. Compared with traditional wall-mounted meters, DIN-rail meters are compact, quick to install and ideal for sub-metering: apartments, shops, equipment racks, EV charging points and rental units.

Main Types You Will Meet

• Single-phase DIN-rail meters (1P2W): the workhorse for homes and small shops, typically 5(60) A direct connected.
• Three-phase DIN-rail meters (3P4W): for workshops, machinery and small commercial buildings.
• WiFi / smart DIN-rail meters: remote reading through an app — popular for landlords and property management.
• Prepaid versions: IC-card or keypad based, used where credit collection is difficult.

Installation Tips From Our Factory Engineers

• Always install the meter after the main breaker, with correct phase sequence for three-phase models.
• Check the rated current against your real load — a 5(60) A direct meter covers most residential circuits without external CTs.
• Keep the display readable after the box door closes; LCD modules differ between models.
• For export projects, confirm the local frequency (50/60 Hz) and register language before ordering.

RuiZhi Electric produces single-phase and three-phase DIN-rail meters in our own factory — every unit is calibrated on photoelectric test benches and strictly inspected before packing. CE certified, MOQ from 1 PC. Ask us for the right model and a factory-direct quotation.