Thermon XT-312 Thermostat SPDT for use on Ruffneck FX Series Explosion Proof Forced Air Unit Heaters

Thermon XT-312 thermostat SPDT for use on Ruffneck FX Series explosion proof forced air unit heaters.

Ruffneck™ Defender® XT‑311 and XT‑312 explosion‑proof heavy‑duty thermostats are the smallest, lightest, and most durable thermostats available. These thermostats are designed to control heating only, cooling only, or ventilation systems in demanding industrial applications. These include oil refineries, petrochemical plants, pulp and paper mills, coal mines, grain elevators, hazardous waste storage facilities, and other hazardous locations where specific explosive gases or dust are present. For hazardous‑location temperature controls, rely on Defender® thermostats for the most dependable and trouble‑free service available. Ruffneck™ Defender® XT‑311 and XT‑312 thermostat’s unique and highly engineered design offers outstanding features and benefits.

Specifications
Temperature range 36°F to 82°F (2°C to 28°C)
Temperature differential 2.5 F° (1.5 C°)
Net weight 2.1 lbs (0.95 kg)
Switching Snap acting
Conduit opening ¾” ‑ 14 NPT

Electrical Rating
22 amps Res, 480 Vac Max; ½ HP @ 125 Vac, 1 HP @ 250 Vac
Class I, Division 1 & 2, Groups C & D;
Class II, Division 1, Groups E, F, & G;
Class II, Division 2, Groups F & G;
Class III; Class I, Zones 1 & 2, Groups IIA & IIB

Available in Two Models
XT-311 (Feed‑Through, Single Pole, Single Throw) For heating‑only applications.
XT-312 (Feed‑Through, Single Pole, Double Throw) For heating or cooling/ventilation applications.

Features

• All‑aluminum exterior 
• No breakable external plastic parts 
• No exposed copper or brass 
• Corrosion resistant, suitable for H2 S environments 
• Compact & lightweight
• More competitively priced
• CFC & mercury free
• Environmentally safe, no leveling required ® 
• 3‑year warranty: the longest trouble‑free warranty in the industry 
• Precision die‑cast components 
• Greater consistency, better quality 
• Bimetal sensing element 
• Fast‑acting, reliable, unaffected by altitude 
• No delicate coils or bellows
• Rugged reliability 
• 480 Vac maximum 
• Wider range of applications

Specifications

• Certification: UL-CUL
• Material: Aluminum 
• Color: Aluminum
• Minimum Temperature: -4°F (-20°C) Ambient
• Maximum Temperature: 104°F (40°C) Ambient

Downloads

Owners Manual (PDF Download)