Description
- Model & Brand: General Electric (GE) / ABB Industrial Solutions / 300-Line Series (Catalog No. CR305HH004BD1H / NEMA Size 6 Magnetic Contactor)
- Physical Dimensions: Heavy-duty industrial open-panel layout frame profile
- Estimated Shipping Weight: 14.50 kg (32.0 lbs) (Packaged in industrial anti-static protection and heavy-duty structural foam crating)
- What’s in the Box: CR305HH004BD1H contactor assembly, 460–480V AC operating coil, silver-alloy power contacts, arc chutes, terminal mounting hardware, and factory inspection test report.
Heavy industrial motor control centers, large-scale gas turbine auxiliary packages (such as GE 7FA pressuring fans), and heavy process compressor drives require extremely robust electromechanical switching components capable of handling massive inrush currents and continuous full-load operations. System engineers integrate the General Electric / ABB CR305HH004BD1H NEMA Size 6 Magnetic Contactor directly into main motor starters, high-capacity resistance heating banks, and heavy-duty power distribution networks (—which is vital for managing loads up to 540 Amps safely, ensuring rapid arc extinction under high fault potentials, and maintaining maximum uptime across demanding industrial environments).
Cabinet and field technicians must ensure precise terminal torque specifications and secure line/load cabling to prevent high-resistance joints and localized thermal runaway during high-amperage switching phases.
| Parameter | Value |
| System Platform | General Electric 300-Line Industrial Control System |
| Device Type | NEMA Size 6 3-Phase Magnetic Full Voltage Non-Reversing Contactor |
| Continuous Current Rating | 540 Amperes (Open / Enclosed industrial rating) |
| Maximum Voltage Rating | 600 VAC, 3-Phase |
| Horsepower Rating | 400 HP at 460/480 VAC |
| Control Coil Voltage | 460 to 480 VAC (60 Hz) |
| Number of Poles | 3 Main Power Poles (3NO) |
| Operating Temperature | Standard industrial ambient range (-20°C to +70°C) |
| Mounting Configuration | Backplate / Panel mount open-type industrial enclosure configuration |
Auditors inspecting heavy industrial control panels, gas turbine skids, and high-voltage power distribution architecture demand rigorous documentation verifying electrical safety, isolation integrity, and international regulatory compliance.
- UL Listed (UL 508 / UL 60947-4-1): Confirms compliance with North American standards for industrial control equipment and motor controllers.
- CSA Certified: Validates Canadian electrical safety performance requirements.
- IEC 60947-4-1 Standard: Complies with international specifications for low-voltage switchgear and controlgear electromechanical contactors.
- RoHS Compliance: Restricts hazardous chemical substances in electronic and electrical component manufacturing.
Compliance Note: Compliance with rigorous NEMA and UL standards guarantees that internal silver-alloy power contacts and magnetic arc chutes withstand heavy arc erosion and maintain mechanical endurance limits across heavy-duty switching cycles. Verify specific short-circuit current ratings (SCCR) with plant single-line diagrams before commissioning.
Dormant high-capacity contactors stored in warehouse stockroom bins face terminal oxidation, contact stiction, and dust accumulation on magnetic pole faces if environmental parameters exceed strict control limits.
Keep the contactor unit sealed tightly inside its original packaging or moisture-barrier protective wrapping to safeguard internal coil windings, laminated magnet cores, and mechanical linkages from airborne particulates and humidity. Maintain warehouse storage temperatures between -40°C and +85°C with relative humidity kept strictly below 95% non-condensing to prevent corrosion on exposed copper busbars and terminal connections. Ensure the heavy assembly remains protected from severe drop forces that could fracture the molded arc chutes or misalign the moving armature.
Panel layout clearance and robust terminal torque dictate physical installation success. Ensure all incoming power feeds and control circuits are completely locked out, tagged out (LOTO), and verified dead using a calibrated high-voltage multimeter prior to handling. Mount the CR305HH004BD1H securely to the structural backplate using rated heavy hardware, torque all power cable lugs to manufacturer specifications, and check manual armature freedom and arc chute placement prior to initial coil energization.
- What is the correct HS Tariff Code for international customs clearance?Industrial electrical relays, contactors, and automatic circuit switches classify under harmonized code 8536.49 (or regional variants like 8536.49.00), though exact regional rulings should be verified with your broker.
- Does this size 6 contactor include built-in thermal overload protection?No, the CR305HH004BD1H functions specifically as a heavy-duty magnetic contactor; thermal or electronic overload protection must be provided separately in motor control configurations.
- How does the Country of Origin (COO) impact global trade compliance?The verified COO dictates trade agreement qualification and must match commercial shipping paperwork to eliminate border customs clearance delays.
- Why is comprehensive transit insurance mandatory for this component?Heavy metal frame structures, large copper coil assemblies, and precision molded arc chutes can suffer structural distortion or mechanical impact damage under severe drop conditions during freight transit.
