Imtra SPA-20700 Watertight Windlass Control Box 12 Volt DC for 3 Wire Motors

IMTRA SPA-20700 Watertight Solenoid Control Box – 12V, 500–1700W, 3-Terminal

Pre-Wired Dual Solenoid Control Box for 3-Wire Windlass Motors

The IMTRA SPA20700 is a watertight, pre-wired solenoid control box designed for 12V DC 3-wire windlass motors rated between 500–1700 watts. Engineered for marine conditions, it delivers reliable windlass control while simplifying installation with external terminals and mounting tabs. This model replaces SPA-10700.

Key Features

• Watertight & Pre-Wired – Fast, clean installation with minimal wiring errors
• Dual Solenoid System – Provides independent control for windlass “up” and “down” functions
• Continuous Duty Rated to 150A – Handles demanding marine use (surge rated to 500A)
• IP66 Rated – Dust-tight and protected against powerful water jets
• Shock-Resistant Housing – Made of self-extinguishing polyester resin for marine environments
• Compact Design – External terminals and install tabs allow flexible mounting in tight spaces
• CE Certified

Specifications

Model Comparison

Installation Notes

• Pre-wired and designed for easy installation
• Use with 3-wire motors only (not compatible with 2-wire or 4-wire motors)
• Mount using built-in tabs; terminals are externally accessible
• No internal wiring modifications required

Maintenance Tips

• Inspect regularly for corrosion or water ingress
• Ensure all connections are tight and clean
• Test windlass operation periodically for optimal reliability

Frequently Asked Questions (FAQ)

Can I use this with any windlass motor?
No, the SPA-20700 is designed for 3-wire windlass motors only. Verify compatibility with your windlass model.

Is this really watertight?
Yes. The control box is rated IP66, meaning it is fully protected from dust and strong water jets, making it ideal for marine environments.

What’s the benefit of dual solenoids?
Dual solenoids provide dedicated control for both up and down movement, ensuring smoother operation and longer motor life.

Questions?

• Tech Support: Tech Support Page
• Check Stock: Stock Inquiry Page
• Request a Shipping Quote: Request Quote Page

• No Sales Tax on Purchases Outside of California
• Buy Now Pay Later with Affirm or PayPal Pay Later
• Distributed my Imtra Corporation in the United States
• Seatech Marine Products, Inc. is an authorized dealer, service center and installer for Imtra

International, USVI, Puerto Rican, Hawaiian & Alaskan Customers: We ship USPS and internationally, EMAIL US for a quote.