The 55 Series is a remote mounting temperature switch with single or dual 15 A SPDT outputs for applications like oven control and heat tracing. It is available in a NEMA Type 4X enclosed version with a die-cast aluminum, epoxy-coated housing or a skeleton open-frame design. External adjustment is provided via a dial, and thermal elements include copper or stainless steel bulb and capillary (6 ft standard, 10 ft for heat trace models). Ambient temperature range is -40 to 160°F (-40 to 71°C), with set point repeatability of ±1% of range. Electrical ratings are 15 A at 125/250/480 VAC resistive, with lower limits for DC and inductive loads. Weight is 1 lb for enclosed models and 12 oz for skeleton. It is cULus listed and cURus recognized per UL 873 and C22.2 No. 24, and complies with the EU Low Voltage Directive.
The 55 Series is designed to provide end-users and OEMs with dependable, repeatable temperature control in a compact size. A single SPDT or dual SPDT output provides critical temperature alarm and emergency shutdown. Standard length thermal assemblies or custom-sized lengths are available to meet application requirements. Typical applications that utilize the 55 Series include commercial ovens and dryers, heat tracing and freeze protection, and refrigeration.
| United Electric Controls Company | |
|---|---|
| Product Category | Thermal Switches and Thermal Protectors |
| Product Number | 55 Series |
| Product Name | Remote Mounting Temperature Switch and Control |
| Switch Type | Normally Open, NO (optional feature); Normally Closed, NC (optional feature) |
| Set Point/ Switch Point | (Adjustable Set Point with Control Knob) |
| Hysteresis / Differential | (Adjustable Hysteresis with Control Knob) |
| High Temperature Set Point | 130 to 650 F (54 to 343 C) |
| Poles | Single Pole, SP |
