McDonnell & Miller FS1-17

McDonnell & Miller FS1-17 is a dependable switch replacement designed for boilers and safety control systems. This FS1-17 replacement switch works with FS1, FS4-3, FS5, FS6, FS8-W, and AFE-1 304300 to ensure reliable operation across your equipment. Built for longevity and consistent performance, this OEM-compatible part delivers precise switching and protects boiler operations from unexpected shutoffs. Engineered for easy installation and secure fit, it blends into existing control panels without modifications. Designed to meet common boiler code standards, it integrates smoothly with control panels and minimizes downtime during swaps. Ideal for service professionals and DIY boiler maintenance, it reduces downtime and helps maintain compliant, safe boiler operation.

• Compatibility: Works with FS1, FS4-3, FS5, FS6, FS8-W, and AFE-1 304300.
• Durable construction: Built to withstand daily boiler cycling and harsh environments.
• OEM replacement part: Ensures correct fit, safety, and performance.
• Easy installation: Standard wiring and mounting for quick replacement.
• Reliable switching: Maintains consistent control of boiler safety systems.