Skip to the content

Masterspapartsonline

All Tags

Search for products

Call 1-888-946-8882

Country/region

Australia (USD $)
Austria (USD $)
Belgium (USD $)
Canada (USD $)
Czechia (USD $)
Denmark (USD $)
Finland (USD $)
France (USD $)
Germany (USD $)
Hong Kong SAR (USD $)
Ireland (USD $)
Israel (USD $)
Italy (USD $)
Japan (USD $)
Malaysia (USD $)
Netherlands (USD $)
New Zealand (USD $)
Norway (USD $)
Poland (USD $)
Portugal (USD $)
Singapore (USD $)
South Korea (USD $)
Spain (USD $)
Sweden (USD $)
Switzerland (USD $)
United Arab Emirates (USD $)
United Kingdom (USD $)
United States (USD $)

Home
Filters
Chemicals
Covers
Parts
Accessories
Customer Care
Help
Service Professionals
Contact

Need help?

Call 1-888-946-8882

Country/region

Australia (USD $)
Austria (USD $)
Belgium (USD $)
Canada (USD $)
Czechia (USD $)
Denmark (USD $)
Finland (USD $)
France (USD $)
Germany (USD $)
Hong Kong SAR (USD $)
Ireland (USD $)
Israel (USD $)
Italy (USD $)
Japan (USD $)
Malaysia (USD $)
Netherlands (USD $)
New Zealand (USD $)
Norway (USD $)
Poland (USD $)
Portugal (USD $)
Singapore (USD $)
South Korea (USD $)
Spain (USD $)
Sweden (USD $)
Switzerland (USD $)
United Arab Emirates (USD $)
United Kingdom (USD $)
United States (USD $)

Home
Filters
Chemicals
Covers
Parts
Accessories
Customer Care
Help
Service Professionals
Contact

Home » Master Spa - X400350 - Circuit-One IEC

Skip to product information

Master Spas

Master Spa - X400350 - Circuit-One IEC

In stock

SKU: X400350

Regular price $10.90

FREE GROUND SHIPPING OVER $99

Quantity

This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.

Need Help? Ask an expert

Email 888-946-8882

Master Spa - X400350 - Circuit-One IEC

Reviews

Warranty

Most parts come standard with a 1-Year manufacture warranty

Returns

Hassle-free return process for up to 30 days

Same Day Shipping

Order before 1:00 EST for Same Day Shipping

Free Shipping Over $99

Most items over $99 ship for free to the contiguous U.S

Hot Water News

Subscribe to our newsletter and receive special offers

Your email

Connect with us for tips & How-to's

Relax. We are here to help.

Monday - Friday: 9:00AM - 5:00PM

Saturday: 10:00AM - 5:00PM

Sunday: 11:00AM - 4:00PM

Eastern Standard Time (EST)

CUSTOMER CARE

Contact Us
Shipping & Returns
Subscribe & Save
Manage Subscription
Service Professionals
Privacy Policy
Your privacy choices

RESOURCES

How-To Guides
Error Codes
Owners Manuals
Master Spa Warranties
MSPO Warranties
Rewards
About Us
Reviews

ABOUT MSPO

Master Spa Parts Online offers genuine OEM Master Spa parts, ensuring top-quality replacements for your Master Spa unit. With a full inventory of parts and a team of highly trained representatives, we make maintaining and owning a Master Spa simple and hassle-free.

Master Spa Parts Online, Inc. is an independent business entity and is not an agent or affiliate of Master Spas, Inc. Master Spa is a registered trademark of Master Spas, Inc.

© 2025, Masterspapartsonline - Powered by Shopify

Payment methods

Your cart

Your cart is empty

PART FINDER

Search