D26MR40A EATON D26 Series Machine Tool Relay

Description

D26MR40A EATON D26 Series Machine Tool Relay

Product Dimensions：

Product Description (Detailed Explanation)

The D26MR40A is a 4-pole AC-rated control relay. It features a modular design where the contacts are housed in individual “poles.” One of the most distinctive features of the D26 series is the convertible contact system: each pole can be manually flipped to function as either Normally Open (NO) or Normally Closed (NC), providing immense flexibility for control circuit logic without needing to purchase different parts.

The “A” suffix specifically designates the coil voltage as 120V AC (at 60Hz) or 110V AC (at 50Hz), which is the standard control voltage for many North American and international industrial panels.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Field Convertibility: You can change any pole from NO to NC in seconds simply by removing the pole, turning it 180 degrees, and reinserting it.

• Modular Expansion: If 4 poles are insufficient, the relay can be expanded by adding “front-deck” or “side-mount” pole blocks, allowing for up to 12 contacts on a single coil.

• Extreme Durability: Built with high-grade materials to withstand millions of mechanical operations, making it ideal for high-cycle industrial machinery.

• Clear Status Indication: The mechanical actuator is visible from the front, allowing technicians to see instantly if the relay is energized or de-energized.

• NEMA A600 Rating: Capable of handling significant inductive loads and high inrush currents typical of motor starter coils and solenoids.

Precautions (Important Notes)

• Coil Compatibility: Ensure the supply voltage matches the 120V AC rating. Running a 120V coil on 240V will cause immediate burnout, while lower voltages will result in “chattering” or failure to pull in.

• Contact Conversion: Always ensure the power is disconnected before attempting to flip the poles. When converting to NC, ensure the mechanical return spring is properly seated.

• Orientation: While it can be mounted in various positions, vertical mounting is recommended for optimal heat dissipation from the AC coil.

• Cleaning: Do not use liquid cleaners on the contacts. If the contacts are pitted due to heavy arcing, the individual pole should be replaced rather than cleaned.

Product Applications (Typical Use Cases)

• Machine Tool Logic: Used in the hard-wired interlocking logic of lathes, mills, and CNC machinery where safety and reliability are paramount.

• Motor Starter Control: Acting as an interposing relay to switch the high-current coils of large size 4 or size 5 motor starters.

• Conveyor Systems: Managing the start/stop sequences and emergency stop interlocks across long material handling lines.

• Panel Logic Buffering: Used to isolate sensitive PLC outputs from heavy inductive loads (like large hydraulic solenoid valves).

• Old System Maintenance: A standard component for repairing and maintaining legacy control panels in automotive and aerospace manufacturing plants.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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