The HHM912-1024-001 is a hydraulic-magnetic circuit breaker manufactured by Sensata Technologies/Airpax. These circuit breakers are designed to protect electrical circuits from overcurrent conditions using a combination of hydraulic and magnetic principles. This type of breaker offers advantages over traditional thermal circuit breakers, especially in applications requiring stable performance across a wide range of temperatures.

Applications:

• Power Distribution Units (PDUs): Used in PDUs to protect individual circuits from overcurrent.
• Industrial Equipment: Employed in industrial machinery and control systems for circuit protection.
• Telecommunications Equipment: Integrated into telecommunications equipment for protecting sensitive circuits.
• Marine Applications: Utilized in marine electrical systems for reliable circuit protection in harsh environments.
• Renewable Energy Systems: Used in solar inverters and wind turbine controllers for overcurrent protection.
• Transportation Systems: Found in automotive and railway applications for protecting electrical circuits.

Features:

• Hydraulic-Magnetic Technology: Provides stable and reliable overcurrent protection independent of ambient temperature.
• Trip-Free Design: Prevents the breaker from being held closed during an overcurrent condition.
• Various Trip Time Delays: Available with different trip time delays to suit various application requirements.
• Multiple Pole Configurations: Available in single-pole, double-pole, and multi-pole configurations.
• RoHS Compliant: Complies with RoHS directives, ensuring it is free from hazardous substances.
• Agency Approvals: Typically approved by UL, CSA, and other regulatory agencies.

Benefits:

• Temperature-Independent Performance: Provides stable and reliable protection regardless of ambient temperature.
• Reliable Overcurrent Protection: Protects electrical circuits from damage caused by overcurrent conditions.
• Safe Operation: Trip-free design ensures safe operation during overcurrent events.
• Versatile Application: Suitable for a wide range of applications requiring overcurrent protection.
• Long Life Expectancy: Robust design ensures a long service life.
• Compliance with Standards: Meets industry standards for safety and performance.

Additional Details:

The HHM912-1024-001 part number specifies particular characteristics like current rating and trip time delay, though a datasheet is needed to confirm. Common current ratings for these breakers range from a few amps to hundreds of amps. The breaking capacity (the maximum current the breaker can safely interrupt) is also a critical specification. The hydraulic-magnetic mechanism operates by using a solenoid coil to trip the breaker when the current exceeds a certain threshold. The hydraulic delay allows for short-duration overloads without tripping the breaker, preventing nuisance tripping. Consult the manufacturer's datasheet for exact specifications and application guidelines.