Square D S29402 12V DC Undervoltage Release – MCCB Accessory

The Square D S29402 Undervoltage Release is a circuit breaker accessory designed for PowerPact molded case circuit breakers (MCCBs). Manufactured by Schneider Electric under the Square D brand, this undervoltage release module automatically trips the circuit breaker when the control voltage falls below a safe operating level. It is commonly used in industrial and commercial power distribution systems to protect equipment and ensure safe operation during power interruptions or low-voltage conditions.

Voltage and Rating

• Control Voltage: 12 V DC
• Type: Undervoltage Release (UVR)

Key Specifications

• Brand: Square D / Schneider Electric
• Manufacturer: Schneider Electric
• Model Number: S29402
• Family: PowerPact
• Product Type: Circuit Breaker Accessory
• Accessory Type: Undervoltage Release
• Category: Undervoltage Trip
  

Technical Specifications

• Circuit Breaker Suffix Code: UN
• Function: Automatically trips breaker during undervoltage conditions
• Designed for integration into compatible PowerPact molded case circuit breakers
• Provides enhanced protection against power loss and voltage instability

Dimensions and Weight

• Weight: 2.25 lbs

Certifications and Standards

• CSA Approved

Features and Benefits

• Provides automatic breaker tripping when control voltage falls below acceptable levels.
• Helps prevent equipment damage caused by low-voltage conditions.
• Improves operational safety by preventing unintended equipment restart.
• Compatible with a wide range of Square D PowerPact MCCB frames.
• Compact design integrates directly into breaker assemblies.
• Ideal for critical power distribution and control applications.

Applications

• Industrial Power Distribution Systems
• Commercial Electrical Installations
• Motor Control Centers
• Critical Equipment Protection
• Emergency Shutdown Systems
• Building Automation Systems
• MCCB Retrofit and Maintenance Projects

Product Summary

• Brand: Square D
• Model: S29402
• Type: Undervoltage Release
• Control Voltage: 12V DC
• Compatible Frames: DG, DJ, DL, HD, HG, HJ, HL, HR, JD, JG, JJ, JL, JR, LD, LG, LJ, LL, LR
• Weight: 2.25 lbs
• Certification: CSA Approved
• Function: Automatic breaker tripping during undervoltage conditions for enhanced system protection and safety.