Overview
The Vulcan 1E2B9 Cal-Stat thermostat is a self-contained, mechanical temperature control device engineered for reliable performance in demanding industrial environments. The Vulcan Cal-Stat has been a reliable temperature control for over 35 years. Rugged, self contained Cal-stats provide design and application versatility not found on many mechanical or solid state temperature controls. These units can be inserted into drilled holes or can be directly immersed into fluids or gases when supplied with an appropriate mounting fitting. The 1E2B9 features a 5/8″ diameter stainless steel sheath with 1/2 NPT coupling thread mounting.
Key Features
- Temperature Range: -100 Degrees to 600 Degrees F
- Construction: Stainless Steel material for corrosion resistance
- Switch Action: Close on Rise — energizes heating load when temperature exceeds setpoint
- Control Precision: Differential +/- 1/2 Degrees F
- Switch Configuration: SPST (Single Pole Single Throw)
- Mounting Style: 1/2 NPT coupling thread fitting for direct mounting in threaded ports
- Factory default setpoint 75 F (24 C), fully adjustable within operating range
- Electrical leads rated for high-temperature operation (450°C/842°F)
Technical Specifications
- Sheath Diameter: 5/8 inch
- Overall Length: 4 3/8 inches
- Insertion Depth: 2 13/16 inches (approximate)
- Control Voltage: 0.5 V AC
- Contact Rating @ 120V: 10 A resistive
- Contact Rating @ 240V: 5 A resistive
- Switch Type: SPST
- Sensor Material: Type 304 stainless steel
- Certifications: UL recognized, CSA compliant
Typical Applications
The Vulcan 1E2B9 thermostat is widely used in:
- Commercial kitchen equipment (fryers, kettles, steamers)
- Heating and hot water systems requiring precise setpoint control
- Industrial process heating with immersion or coupling-mount installation
- Temperature-critical manufacturing and food service applications
- Replacement control in retrofit and maintenance scenarios
Compatibility & Replacements
Compatible With
- Systems requiring -100°F to 600°F mechanical temperature control
- 120 VAC and 240 VAC electrical circuits
- Direct immersion or coupling-mounted installation methods
- Loads up to 10 A @ 120V and 5 A @ 240V
Replaces / Drop-In Replacement For
- Earlier-generation Vulcan Cal-Stat models with identical 5/8″ NPT coupling mounting specification
- OEM Vulcan 1E2B9 originals as exact specification replacement
- Compatible as direct replacement where original equipment calls for this model
Works With
- Any heating or cooling load compatible with 10 A @ 120V or 5 A @ 240V switch rating
- Contactor-controlled systems (recommended for improved performance)
- Capacitor surge suppression circuits (0.1 µF, 600 VDC min. for 120 VAC; 1000 VDC min. for 240 VAC)
- Industrial process control systems with mechanical temperature setpoint adjustment
