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Transparent GE CR306A103 magnetic motor starter, DIN rail mount, three-pole industrial control unit

GE

GE CR306A103 Magnetic Motor Starter 240V AC 3 P

SKU CH-WYCD-0V3TN

Non-reversing three-pole magnetic motor starter with thermal overload protection for 240 V AC DIN-rail mounting

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Thermal overload protection prevents motor damage
  • Three-pole design handles three-phase power up to 600V AC
  • DIN rail mounting simplifies panel installation
  • Non-reversing starter suits single-direction motor control
  • Coil operates at 240V AC for standard supply compatibility

GE CR306A103 Magnetic Motor Starter

The GE CR306A103 is a non-reversing magnetic motor starter designed for three-phase industrial control applications. It mounts on a DIN rail and provides thermal overload protection for connected equipment. The unit operates with a 240V AC coil voltage and carries a maximum voltage rating of 240V AC. It suits automation panels requiring reliable motor switching across three poles.

Thermal overload response under continuous operation

The thermal overload protection reacts to sustained current rather than momentary spikes, allowing normal motor starting currents to pass without nuisance tripping. During prolonged overload conditions the heater elements gradually deflect the trip mechanism, disconnecting the motor before insulation damage occurs. This behaviour matches standard NEMA starter duty cycles where the starter remains closed for hours at rated load. The transparent housing permits visual confirmation of contact status during maintenance checks.

Replaces older NEMA starters lacking DIN rail

This starter upgrades installations that used panel-mounted contactors with separate overload blocks, consolidating both functions in a single DIN rail footprint. The jump is worthwhile when panel space is limited or when migrating to modular enclosure layouts that standardise on rail mounting. It does not serve applications requiring reversing capability or voltages above 240V AC. Buyers needing single-phase control above 1 hp at 240V AC should verify the 1 hp rating matches their motor nameplate.

Highlights

  • Thermal overload protection prevents motor damage
  • Three-pole design handles three-phase power up to 600V AC
  • DIN rail mounting simplifies panel installation
  • Non-reversing starter suits single-direction motor control
  • Coil operates at 240V AC for standard supply compatibility

Specifications

BrandGE
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

How much heat does the CR306A103 starter generate when running continuously on a 240V AC three-phase circuit?

The GE CR306A103 is a magnetic motor starter with thermal overload protection; it does not publish a continuous heat-dissipation figure, so exact temperature rise under all-day operation is not available from the supplied data.

What external components must I already have to install and operate this 3-pole NEMA starter on a DIN rail?

You will need a compatible 240V AC control supply for the coil, appropriately rated three-phase power conductors, a DIN rail section, and a motor whose full-load current falls within the starter's thermal overload range.

Will this non-reversing starter work with an older 208V AC motor rated at 1-1/2 hp that I plan to keep?

Yes, the CR306A103 lists 1-1/2 hp at 208V AC three-phase, so it can directly control that motor without modification.

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