The GRACO 557741 is a field sensitive magnetic proximity switch designed for use with MSP and MH series divider valves. It is constructed from 303 stainless steel and Buna-N materials, intended to monitor and signal the cycle status of divider valves in lubrication systems.

Key Features:

• Field Sensitive Magnetic Proximity Switch
• 557741 (3-Pin BH Mini)
• 303 Stainless Steel, Buna-N
• Up to 10,000 psi (690 bar)
• All series progressive families (MSP, MH, etc.)
• Cycle rates up to 200 CPM
• Available in 115 VAC or 12-32 VDC
• High reliability and robust construction
• Easy to install and maintain

Applications:
Used in lubrication systems to monitor and signal the cycle status of divider valves, ensuring proper lubrication and system health in industrial environments.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Ensure power supply matches the switch specification (115 VAC or 12-32 VDC)
• Mount securely to the divider valve as per manufacturer instructions
• Verify proper alignment and connection for accurate cycle detection
• Regularly inspect for wear or damage and replace as needed