Bard HVAC 8402-138BX Limit Control 240°F One-Shot

Description

The Bard HVAC 8402-138BX is a one-shot (non-resettable) high-limit control engineered to protect HVAC equipment from dangerous overtemperature conditions. When the sensed temperature reaches the 240°F trip point, this limit control permanently opens the circuit — providing a definitive, fail-safe response that alerts technicians to an underlying system fault before equipment damage or a safety hazard can occur.

Unlike auto-reset or manual-reset limit controls, a one-shot device cannot be reset in the field. Once tripped, it must be replaced, ensuring that the root cause of the overtemperature event is diagnosed and corrected before the system is returned to service. This design philosophy makes the 8402-138BX an ideal choice for critical safety-limit applications in Bard wall-mount air conditioners, packaged units, and other commercial HVAC equipment.

Key Features

• 240°F (116°C) trip temperature for high-limit overheat protection
• One-shot (non-resettable) design — permanently opens circuit upon trip
• Forces technician diagnosis before system restart, preventing repeat failures
• Direct OEM replacement part for compatible Bard HVAC equipment
• Reliable, fail-safe operation in commercial and light-industrial HVAC applications

Application

• Designed for use in Bard HVAC packaged and wall-mount units
• Suitable for high-limit safety control circuits requiring a non-resettable response
• Ideal for protecting heat exchangers, electric heating elements, and other temperature-sensitive components

Specifications

• SKU: 8402-138BX
• Brand: Bard HVAC
• Trip Temperature: 240°F
• Type: One-Shot (Non-Resettable) Limit Control