Fenwal 11-030000-048 Thermoswitch

The Fenwal 11-030000-048 Thermoswitch is a precision-engineered surface mount temperature controller designed for high-reliability thermal management in HVACR and industrial applications. This adjustable thermoswitch features a rugged outer shell that acts as the primary sensing element, utilizing differential expansion technology to provide rapid response to temperature fluctuations. With a temperature range of 85°F to 250°F, it allows technicians to fine-tune setpoints for specific operational requirements. The open on rise (normally closed) contact configuration ensures the circuit breaks when the temperature reaches the calibrated limit, making it ideal for high-limit protection or equipment cooling cycles. Designed for direct surface mounting, this unit ensures high thermal conductivity and stable performance under vibration, maintaining narrow differentials for tight procedural control across commercial machinery, heat exchangers, and sensitive electronic enclosures.

• Differential Expansion Sensing: The Fenwal 11-030000-048 uses the outer case as the active sensing member, significantly reducing thermal lag compared to traditional bimetal switches.
• High Setpoint Stability: Once calibrated, the adjustable temperature control maintains its trip point despite environmental stressors, reducing the need for frequent field recalibration.
• Industrial Build Quality: Features a robust design that excels in HVAC systems and industrial machinery where durability is a non-negotiable requirement.
• Universal Surface Mounting: The low-profile surface mount design allows for versatile integration on flat surfaces, pipes, or tanks.
• Narrow Differential Control: Optimized for applications requiring precise temperature regulation without wide swings in thermal cycles.

How do I adjust the temperature setpoint on the Fenwal 11-030000-048?
The setpoint is adjusted using the internal screw. Turning the adjustment screw changes the tension on the internal contact assembly to reach your desired 85-250 degree F target.

Is this unit suitable for high-vibration industrial environments?
Yes, the Fenwal 11-030000-048 is a surface mount thermoswitch engineered with high-tension contacts that resist vibration-induced chatter, ensuring a clean electrical break.

What is the benefit of an 'Open on Rise' configuration?
The open on rise thermoswitch is primarily used as a safety limit or to shut down heating elements. When the sensed surface hits the setpoint, the circuit opens to prevent overheating.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.