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GE CR308CT541AGEAL6A

Product Name:​ GE CR308 Series NEMA Size 2 Combination Magnetic Starter (300/400-Line)
Product Introduction:​ The GE CR307 and CR308 series controllers are 300/400-Line combination magnetic starters designed for industrial motor applications. The CR308 series specifically uses a fusible or non-fusible disconnect switch. These devices integrate a magnetic contactor with a three-leg block overload relay and a manual disconnect or circuit breaker. The CR308 series is now manufactured by ABB under license.
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Detailed content

Technical Specifications:
  • Series: CR307/CR308 (CR308 uses a fusible or non-fusible disconnect switch)
  • Classification: NEMA Size 2 equipment
  • Maximum Continuous Ampere Rating: 45A
  • Maximum Voltage Limit: 600V
  • Overload Relay: Adjustable, with ±10% field adjustment of the tripping current
  • Coil: Strongbox Coil — an encapsulated coil resistant to moisture, dirt, and mechanical damage
Standard Features:
  • Strongbox Coil: Encapsulated coil resistant to moisture, dirt, and mechanical damage
  • Adjustable Overload Relay: Includes an adjustment dial for ±10% field adjustment of the tripping current
  • Trip Indicator: A yellow indicator located to the right of the reset arm that becomes visible when the relay trips
  • Interlock Safety: The disconnect switch is mechanically interlocked with the enclosure door, preventing it from being opened unless the handle is in the OFF position
Working Principle:​ The device provides a manual means of disconnecting the motor from the line. The circuit breaker or fusible disconnect switch offers motor branch short-circuit protection, while the overload relay provides motor protection against both running and stalled motor overload conditions.
Application Scenarios:​ Designed for industrial motor applications, integrating motor branch short-circuit protection and overload protection.
Installation Requirements:​ When installing, mount the starter on a sturdy vertical support. Ensure motor branch circuit protection per National Electrical Code.
Usage Notes:
  • Disconnect power before opening the enclosure for servicing
  • Most components, including the coil and contacts, can be removed or inspected without specialized tools
  • When ordering replacement components, refer to the Principal Renewal Parts list and provide the specific catalog number

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