Place Your Order by 1 pm for Same-Day Shipping

Place Your Order by 1 pm for Same-Day Shipping

America's Heating & Cooling Store, Est 2002
Free Shipping
See Details
My Location:
Chicago, IL

STXH240S05 Type 1 50kA 240/120V Split Phase Surge Protector

STXH240S05 Type 1 50kA 240/120V Split Phase Surge Protector

Model: Mersen STXH240S05

Actual product may vary from photos.

Model: Mersen STXH240S05

Or as low as

Volume Discounts
Express Pay Available
checkmark icon
In Stock and Ready to Ship
If ordered by 1PM CST M-F, ships same day. All items on your order must be in stock for same-day shipping.


  • 120/240 Voltage compatible 
  • Mounts directly to the disconnect box
  • Simple 3 wire installation for 240 volt systems 
  • Simple 2 wire installation for 120 volt systems 
  • Designed to capture voltage spikes which can occur in any electrical grid and keep that excess voltage from being transfered to your system


The most compact of the STX series offering, the Surge-Trap® Type 1 STXH meets requirements for UL1449 5th Edition and is suitable for any 120/240VAC split phase application. The STXH Series SPD features TPMOV® technology inside making it the safest product available in its category. Its compact size, performance, and reliability are especially ideal for HVAC applications and direct mounting to air condition disconnect switches.


• Designed with the industry leading Mersen TPMOV® Technology

• Compact footprint designed to mate with AC Disconnect Switches

• LED status indicator (ON = Good, OFF = Replace)

• NEMA 4X enclosure for outdoor or indoor use

• Fits 1/2” knockouts with 18” leads for easy installation

• For use in ANSI/UL Type 1 or 2 SPD installations

• 3 Modes of Protection (L-N, L-L)

• 3-year warranty

System Information
view information
Product Type
Surge Protector
Electrical Information
view information
50; 60 Hz
view information
Voltage Phase
view information
120 / 2 / 240 Volts
Product Dimensions
view information
1 17/20 Inches
view information
3 7/100 Inches
view information
3 11/50 Inches
© Copyright 2002-2024, Alpine Home Air Products
Privacy Policy