Overview
The Cutler-Hammer D26MB is a Type M magnetic relay rated for 10 Amperes at 600V AC maximum. This industrial-duty relay is part of Eaton’s D26 Series multi-pole machine tool relay line and delivers dependable contact closure for motor control, HVAC systems, lighting circuits, and general industrial switching applications. The D26MB accepts up to four removable D26MPR rear pole modules for convertible NO (normally open) or NC (normally closed) contact configurations, making it adaptable to various control logic requirements.
Key Features
- 10 Amp switching capacity at 600V AC rated maximum
- Type M magnetic coil construction for reliable, fast-acting operation
- Modular rear pole design — accepts up to 4 convertible contact assemblies (D26MPR)
- Multi-voltage coil options — 120V AC 60 Hz, 110V AC 50 Hz versions available
- Machine tool rated — engineered for industrial control panel and manufacturing equipment
- Compact form factor — approximately 6″ × 6″ × 5″ footprint for panel mounting
Technical Specifications
- Contact Rating: 10 Amperes at 600V AC (main pole)
- Pilot Duty: 1.1 Amperes at 120V DC / 0.2 Amperes at 240V DC
- Relay Type: Type M Electromagnetic (Magnetic Coil)
- Voltage Rating: 600V AC maximum
- Coil Voltage (Standard): 120V AC 60 Hz (other versions: 110V AC 50 Hz)
- Number of Poles: Main coil plus up to 4 rear pole positions (convertible contacts)
- Contact Options: Convertible NO or NC (supplied by D26MPR modules)
- Series: Eaton D26 Type M Machine Tool Relay
- Weight: Approximately 820 grams (1.8 lbs)
- Mounting: Panel mounted (standard DIN footprint)
- Operating Temperature: Industrial ambient per IEC standards
- Certifications: UL/CSA listed industrial control equipment
Typical Applications
- Machine tool motor starter circuits and interlocking control
- Industrial HVAC system sequencing and load switching
- Lighting control and load shedding in manufacturing facilities
- Process automation and pump/fan motor starter logic
- General industrial switching where medium-duty, fast-acting relay performance is required
Compatibility & Replacements
Compatible With
- Standard industrial 600V AC control circuits and motor starters
- Machine tool control panels and manufacturing equipment
- Industrial automation systems using hardwired relay logic
- Standard DIN rail mounting enclosures
- HVAC and facility automation systems rated for 600V AC
Replaces / Drop-In Replacement For
- Other Eaton Cutler-Hammer D26 Series Type M relays with identical coil and contact specifications
- Legacy machine tool relays in 600V AC rated applications
- Verify compatibility with your original equipment before replacement
Works With
- D26MPR rear pole contact modules (convertible NO/NC contacts)
- D26MD accessory components
- Standard industrial relay sockets and mounting hardware
- AC control systems and hardwired automation circuits
