Description
Surge Protective Device
ABB THQLSURGE2 Surge Protective Device is a residential surge protective device designed for compatible 120/240V AC electrical distribution applications. The unit uses a 2-pole configuration and pigtail connection for installation in approved compatible equipment.
Small details.
Big decisions.
Look beyond the product name. These four checks help narrow the right configuration.
MISSION.A little precision. A smarter selection.
Type 1 Surge Device
THQLSURGE2 is identified as a Type 1 surge protective device. Follow the approved installation requirements for its intended location.
Pigtail Connection
The listed configuration uses a pigtail connection for compatible equipment. Confirm the wiring arrangement before selecting a replacement.
120/240V AC Application
This two-pole SPD serves compatible residential distribution systems. Match the electrical system and equipment to the exact model.
Surge-Current Ratings
The listed ratings are 10 kA nominal and 25 kA maximum surge current. Keep these separate from the circuit’s continuous-current requirements.
Before you select
Match the equipment. Check the fit.Electrical System
Match the SPD to the 120/240V AC system and approved equipment. Confirm the connection arrangement for the selected catalog number.
Surge Ratings
Compare nominal and maximum surge-current ratings using their correct definitions. These are not branch-circuit ampere ratings.
Connection & Location
Review the manufacturer’s installation location, conductor routing and protective-device requirements for the complete system.
Ask Willy: Need Help Selecting This ABB Surge Protective Device?
Send us the ABB catalog number, equipment model and required surge protective device configuration so our team can help review your selection.
Important Product Questions
Does an SPD replace the circuit breaker?
No. Surge protection and circuit overcurrent protection serve different functions. Use the SPD with the required equipment and protective devices.
Are nominal and maximum surge-current ratings the same?
No. They describe different surge-performance ratings. Compare the same rating type when evaluating devices and confirm the selected model’s values.
What must match before replacing an existing surge device?
Confirm system voltage, equipment compatibility, SPD type, connection method and installation requirements. Physical fit alone is not sufficient.
Important Model Distinction
Surge-current ratings, connection method and approved installation depend on the SPD catalog number. Surge protection does not replace the system’s required circuit protection.
