Product Overview
Honeywell 3HT1 High Temperature Roller Plunger Limit Switch
Condition
New old stock. Unused surplus condition. Housing stamped 3HT1 8414 with electrical ratings 3A 125/250 VAC. Threaded bushing includes mounting hex nuts. Terminals show clean threads marked C, NO, and NC. Photos show the specific unit you will receive.
Ships same or next business day from our Idaho warehouse. Honest pricing, no nonsense.
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Product Overview
Honeywell MICRO SWITCH 3HT1 is a specialized high-temperature snap-action switch engineered for severe thermal environments. Built with a corrosion-resistant housing and a ceramic base, the 3HT1 handles continuous operating temperatures up to 538 degrees Celsius (1000 degrees Fahrenheit). The actuator features an in-line roller plunger mounted on a threaded bushing for precise panel placement, paired with single-pole double-throw (SPDT) switching and three screw stud terminals.
Key Features
- Operating temperature rating up to 538 °C (1000 °F) for severe industrial heat
- SPDT (Single Pole Double Throw) snap-action contact arrangement
- Rated for 3 A, 1/10 HP at 125 VAC and 3 A, 1/6 HP at 250 VAC
- Panel-mount threaded bushing with roller plunger actuator and locking nuts
- Corrosion-resistant metal housing with high-heat ceramic terminal base
- Three 6-32 threaded screw stud terminals marked C, NO, and NC
- UL recognized and CSA certified construction
Applications
- Direct replacement in industrial heat-treating furnaces, annealing ovens, and foundry equipment
- Actuating position limits on high-temperature dampers, valves, and kiln doors
- Refitting thermal processing machinery where standard microswitches fail from radiant heat
- High-heat automation projects, custom kiln builds, or experimental glass/metalworking rigs
Frequently Asked Questions
What are the electrical ratings stamped on the switch body?
The switch casing is stamped with ratings of 3 A, 1/10 HP at 125 VAC and 3 A, 1/6 HP at 250 VAC.
What type of wiring termination does this switch use?
It utilizes three 6-32 threaded stud terminals fitted with hex nuts, clearly marked for Common (C), Normally Open (NO), and Normally Closed (NC) connections.
Why buy this specific unit rather than hunting down an untracked lot?
High-temperature HT-series switches are specialized, costly components where certainty matters. Here you get a verified, individually inspected new-old-stock unit with intact threads, clean terminals, and exact photos of the switch that ships. Orders ship same or next business day from our Idaho warehouse.
Built to keep tripping true long after ordinary switches melt away. Bolt it down, wire the studs, and let your furnace do its worst.
Need more than one? More pieces cost less each - the price-break table on this page shows what each quantity costs.
Shipping? This one clears the free-shipping line on its own - and it leaves the Idaho warehouse the same or next business day.
