Overview
The Chromalox 263046 AR-514 is a mechanical non-indicating temperature controller from Chromalox’s proven AR series line. It operates across a 200–550°F temperature range and features a 7-foot bulb and capillary sensing element. This unit is designed for single-phase electrical control of heated solids, liquids, and gases in demanding industrial environments.
Key Features
- Non-indicating design — no temperature readout window; control by calibrated knob setting only
- Snap-action switching mechanism — reliable contact closure and opening in response to setpoint temperature
- 7-foot capillary length — allows remote bulb placement for flexible installation
- Pilot light indicator — visual confirmation of control state
- Direct load switching — capable of switching load current directly through control contacts
- Nickel-plated copper bulb and capillary — suited for 200–500°F range applications
Technical Specifications
- Temperature Range: 200–550°F
- Capillary Length: 7 feet
- Control Type: Bulb and capillary liquid expansion
- Phase: Single phase
- Bulb Material: Nickel-plated copper (for 200–500°F applications)
- Contacts: Snap-action switching, typically single pole double throw (SPDT)
- Ambient Operating Limits: −40°F to +160°F
- Differential: Approximately ±4% of scale
- Enclosure Options: Can be surface or flush-mounted in control panels
- Part Number (PCN): 263046
Typical Applications
Chromalox 263046 AR-514 controllers are used in:
- Industrial process heating — maintaining consistent temperatures in manufacturing environments
- Electrically heated vessels and tanks — liquid and slurry process control
- Duct heaters and immersion heaters — freeze protection and temperature maintenance
- Commercial/industrial space heating systems — comfort heat control
- Laboratory and testing equipment — precise thermal environment management
Compatibility & Replacements
Compatible With
- Single-phase AC power circuits (125, 250, 480 Vac available on related AR models)
- Standard 3-wire control systems with snap-action load switching
- Panel-mount and direct-load heating applications
- Remote bulb installations via extended capillary tubing
Replaces / Drop-In Replacement For
The Chromalox AR-514 is part of the AR series family. Verify with the original manufacturer documentation or your system integrator to confirm direct interchangeability with other AR model variants (such as AR-514KC or AR-514P) or predecessor units. Mechanical thermostats may differ in mounting, terminal configuration, or environmental rating—confirm specifications before ordering replacement units.
Works With
- Chromalox electric heating elements (immersion heaters, duct heaters, process heaters)
- Standard industrial control relays and contactors for load amplification
- Panel-mount enclosures and DIN-rail configurations
- Emergency shutdown and over-temperature safety controls (recommended secondary protection)
