Rule Industries 40FA Rule-A-Matic Plus Bilge Pump Float Switch with Fuse Holder Mercury-Free

The Rule Industries 40FA Rule-A-Matic Plus Float Switch is a sleek, rugged, and mercury-free automatic bilge pump float switch featuring a built-in inline fuse holder for added circuit protection. Designed to automatically activate your bilge pump when water rises and shut it off once the bilge is clear, it delivers reliable hands-free water management in any marine environment.

The 40FA activates the pump when the water level reaches 2 inches and turns it off when the level drops to 3/4 inch, keeping your bilge dry with minimal intervention. The integrated fuse holder protects both the pump and switch from electrical faults without requiring a separate fuse installation on the positive wire.

Key Features:

• Strong, fully integrated impact-resistant cover protects against debris and jamming
• Mercury-free design — environmentally responsible and safe for all marine applications
• Built-in inline fuse holder for pump and circuit protection
• 14-gauge abrasion-resistant marine-grade wire exits from the top to stay above the waterline
• Moisture-tight seals for reliable submersible use
• Built-in test feature for quick operational verification without removing the switch
• Compatible with 12V, 24V, and 32V DC bilge pump systems
• Rated for pumps drawing up to 20 amps
• Can also be used to operate high water alarm systems
• Compact dimensions: 3" H x 5-3/8" L x 2-1/2" W
• Backed by a 2-year limited warranty

The Rule-A-Matic Plus 40FA is an ideal upgrade for boaters who want automatic bilge protection with the convenience of a pre-installed fuse holder — no additional wiring components required.