CR306C002

What type of industrial component is this?

This is a NEMA-rated magnetic motor starter from the 300-Line full-voltage power device range. It is intended for across-the-line starting and stopping of electric motors in industrial control panels.

What is a magnetic starter used for?

A magnetic starter is used to control an electric motor by switching power through contactors while incorporating overload protection for the motor circuit. It is commonly used in pumps, fans, conveyors, compressors and other motor-driven machinery.

Is this part suitable for full-voltage motor starting?

Yes. The CR306 range is listed under NEMA full-voltage magnetic starters, meaning it is intended for direct, across-the-line motor starting applications where full supply voltage is applied to the motor.

What voltage range is this type of starter designed for?

The associated GE 300-Line starter range is rated for use up to 600 V maximum at 50/60 Hz, depending on the complete configuration and application requirements.

Does this type of starter include overload protection?

The CR306 magnetic starter range is associated with thermal overload relay protection. Overload heater selection is normally based on the motor full-load current, so the correct heater elements must be matched to the application.

Can auxiliary contacts be added to this type of starter?

Yes. Compatible auxiliary contact kits can be used with 300-Line magnetic starters to add extra control circuits, such as signalling, sequencing or interlocking functions.

What mounting orientation is required?

The 300-Line starter equipment is designed to be mounted on a sturdy vertical surface with the line-side terminals facing upwards. Other mounting orientations are not recommended in the catalogue information.

What operating temperature range applies to the 300-Line starter family?

The catalogue states that the equipment is designed for an ambient temperature outside the enclosure of -25 °C to 40 °C. Internal enclosure temperature limits must also be considered during panel design.

What should be checked when replacing an existing starter?

Key checks include NEMA size, coil voltage, number of poles, enclosure style, overload relay type, heater selection, auxiliary contact requirements and the motor full-load current. Matching these details helps ensure the replacement aligns with the original application.

Is this intended for single-speed or multi-speed motor control?

The CR306 series is associated with single-speed, nonreversing magnetic starter applications. Multi-speed or reversing applications normally use other starter configurations within the same wider product family.

What applications commonly use this style of starter?

This style of NEMA magnetic starter is commonly found in industrial machinery panels, HVAC equipment, water treatment systems, production lines, material handling equipment and general motor control installations.

Are control circuit fuses relevant to this type of equipment?

Yes. The catalogue notes that control circuit fusing may be required depending on branch circuit protection, control wire size, enclosure wiring and installed control components. The final panel design should be checked against applicable electrical rules and site requirements.