D23MR40A - Cutler-Hammer Relay

D23MR40A - Cutler-Hammer Relay

The Cutler Hammer D23MR40A Type M relay is a 4-pole control relay designed for use in electrical control systems that require dependable switching of multiple circuits. Rated at 10 amperes and up to 300V AC maximum, this relay provides reversible contacts that allow flexible control configurations within legacy electrical panels and automation assemblies. The included 120V 60CY coil (Catalog No. 9-1989-1) energizes the relay to operate the contact set, enabling coordinated switching functions in motor control circuits, machinery control panels, and industrial automation equipment. Built with the durable construction typical of Cutler Hammer control components, this relay is intended to deliver long service life when properly installed and maintained. The D23MR40A also carries cross-referenced catalog markings including D23MB, D26MPR, D26MPL, and D26MPS, helping technicians confirm compatibility when replacing existing components in established systems.

Key Features and Benefits

• 4-Pole configuration: allows simultaneous control of multiple circuits from a single relay assembly
• 10 Ampere switching capacity: suitable for common industrial control applications
• Reversible contacts: provide flexibility for control circuit design and wiring configurations
• 120V 60CY coil (9-1989-1): designed for standard control voltage environments
• Type M relay frame: supports form, fit, and functional replacement in compatible assemblies
• Cutler Hammer construction: designed for dependable operation in electrical control systems
• Multiple catalog references (D23MB, D26MPR, D26MPL, D26MPS): assist with identification during maintenance and part matching
• Durable materials: commonly used in industrial relay manufacturing and intended for long service life when maintained properly
  

Technical Specifications

• Manufacturer: Cutler Hammer
  
• Part Number: D23MR40A
  
• Device Type: Control Relay
  
• Relay Type: Type M
  
• Number of Poles: 4
  
• Rated Current: 10 Amperes
  
• Maximum Voltage: 300V AC
  
• Coil Voltage: 120V, 60CY
  
• Coil Catalog Number: 9-1989-1
  
• Contact Configuration: Reversible contacts
  
• Frame Type: M
  
• Approximate Shipping Weight: 3.5 lbs
  
• Approximate Height: 2.38 in
  
• Additional Catalog Markings: D23MB, D26MPR, D26MPL, D26MPS
  

Material Compliance and Certifications

• Industry Standards: The D23MR40A Type M relay was manufactured to meet the electrical and material standards in place for industrial control equipment at the time of production.
• Application Compliance: Components like this are commonly used in commercial and industrial electrical systems where proper installation and maintenance are required to maintain safe operation. Always verify system compatibility, voltage requirements, and applicable code compliance before installation.
  

Where It Works Best

• This relay is commonly used in industrial control panels, machinery control circuits, and motor control systems where a multi-pole relay is required to coordinate several switching operations at once.
• It is well suited for maintenance and replacement in existing electrical assemblies that utilize Cutler Hammer Type M relay components.
• Electricians, facility maintenance teams, and equipment technicians often use this type of relay in manufacturing environments, commercial buildings, and legacy automation systems where maintaining original equipment configuration is important for continued system operation.