Description
Heavy Duty Non-Fusible Safety Switch
ABB Heavy Duty Non-Fusible Safety Switches are designed for demanding commercial and industrial disconnect applications where a rugged disconnecting means is required without integral fuse protection. This product family includes 30A, 60A, 100A, and 200A three-pole configurations with indoor NEMA 1 and outdoor NEMA 3R enclosures.
Small details.
Big decisions.
Look beyond the product name. These four checks help narrow the right configuration.
MISSION.A little precision. A smarter selection.
30A Models
Select THN3361 for the 30A NEMA 1 indoor configuration or THN3361R for the corresponding NEMA 3R outdoor configuration.
60A Models
Select THN3362 for the 60A NEMA 1 indoor configuration or THN3362R for the corresponding NEMA 3R outdoor configuration.
100A Models
Select THN3363 for the 100A NEMA 1 indoor configuration or THN3363R for the corresponding NEMA 3R outdoor configuration.
200A Model
Select THN3364 for the listed 200A, 3-pole, NEMA 1 indoor configuration.
Before you select
Match the equipment. Check the fit.Load & Poles
Match the switch ampere rating, pole arrangement and system voltage. Check any motor-load requirements for the exact catalog number.
Circuit Protection
Confirm whether the selected switch is fusible or non-fusible. Coordinate the required protective devices with the electrical system.
Enclosure & Terminals
Match the environmental rating, conductor range and mounting requirements. Check neutral and grounding accessories separately.
Ask Willy: Need Help Selecting This ABB Disconnect Switch?
Send us the ABB catalog number, equipment model and required disconnect switch configuration so our team can help review your selection.
Important Product Questions
Does a disconnect switch always provide overcurrent protection?
No. A non-fusible switch requires circuit protection elsewhere in the system. A fusible configuration must use the specified, correctly selected fuses.
Can indoor and outdoor models be selected by amperage alone?
No. Match enclosure rating, poles, voltage and conductor requirements as well as amperage. Use the exact catalog number for the installation environment.
What should be checked when replacing an existing safety switch?
Compare the complete catalog number, duty class, fusible arrangement, poles, voltage, enclosure and terminal requirements. Verify any neutral and grounding accessories.
Important Model Distinction
Ampere rating, pole arrangement, voltage, enclosure and fuse configuration depend on the selected switch. A matching current rating alone does not establish a suitable replacement.
