GE CR306G004XBNA

Overview

The GE CR306G004XBNA is a NEMA-rated magnetic motor starter from the GE CR306/300-Line series. It is designed for full-voltage, non-reversing motor control applications, providing reliable switching and overload protection for large industrial motors.

This device is widely used in heavy-duty electrical distribution and motor control systems, especially where high horsepower motors must be started and protected safely.

---

Main Function

The CR306G004XBNA is used to:

• Start and stop three-phase induction motors
• Provide overload protection through thermal relay systems
• Protect motors from phase loss and electrical faults
• Control high-power industrial loads via electromagnetic contactor switching

It functions as a combined contactor + motor protection starter system.

---

Key Features

• High Power Capacity: Suitable for motors up to ~200 HP at 460V
• NEMA Size 5 Rating: Designed for heavy industrial applications
• 3-Pole Design: Supports three-phase power systems
• 460–480 VAC Coil Voltage: Standard industrial control voltage
• Thermal Overload Protection: Built-in Class 20 overload relay system
• Long Mechanical Life: Up to millions of switching cycles
• Modular Accessories: Supports auxiliary contacts, interlocks, and control options

---

Technical Specifications

Parameter	Specification
Model	CR306G004XBNA
Manufacturer	GE (General Electric)
Product Type	Magnetic Motor Starter
Series	CR306 / 300-Line
NEMA Size	5
Poles	3
Rated Voltage	Up to 600 VAC
Coil Voltage	460–480 VAC
Motor Rating	Up to 200 HP @ 460V
Current Rating	~270 A
Frequency	50/60 Hz
Protection	Thermal overload relay (Class 20)
Operating Type	Non-reversing full-voltage starter

---

Structure & Composition

The unit is built as an industrial electromagnetic switching assembly, including:

• Heavy-duty 3-pole contactor
• Thermal overload relay block
• Encapsulated coil assembly
• Arc suppression contact system
• Mechanical actuator mechanism
• Terminal blocks for line and load wiring

The contacts are designed with silver alloy materials for durability and arc resistance, ensuring long service life under high load switching.

---

Applications

The CR306G004XBNA is commonly used in:

• Industrial motor control centers (MCCs)
• Pumps and compressors
• Conveyor systems
• HVAC industrial chillers
• Oil & gas processing equipment
• Power plant auxiliary motors

It is ideal for high-power, continuous-duty motor applications.

---

Installation & Maintenance

Installation:

• Mounted inside motor control centers or industrial panels
• Requires correct coil voltage wiring (460–480 VAC)
• Overload relay must be set according to motor FLA

Maintenance:

• Periodic inspection of contact wear
• Check thermal overload calibration
• Tighten terminal connections
• Replace contact sets if pitting or arc damage appears

---

Advantages

• High reliability for heavy-duty motor switching
• Strong overload and fault protection
• Long mechanical and electrical lifespan
• Flexible accessory integration
• Widely used and industry-standard design

---

Summary

The GE CR306G004XBNA Magnetic Motor Starter is a heavy-duty NEMA Size 5 industrial motor control device designed for high-power applications up to 200 HP. With its robust construction, overload protection, and reliable switching performance, it is widely used in demanding industrial environments where safe and stable motor operation is essential