HLS-CMA3 technical information, including its features and specifications is available in this post.
This product features Automotive Relay functions.
This package type is 5 Pin type.
The component is manufactured by HOWO, Helishun.
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Description
The HLS-CMA3 is a high-current automotive relay featuring a 5-pin configuration and capable of switching up to 40A loads in 14VDC systems. It supports multiple contact forms (1A, 1B, 1C) and uses durable contact materials such as AgNi and AgSnO to ensure reliable operation under demanding conditions. This relay is widely used in automotive power control, battery systems, and high-current switching applications.
Features
- Automotive-grade relay with 5-pin configuration
- Supports contact forms: 1A (NO), 1B (NC), 1C (SPDT)
- High switching current up to 40A
- Contact materials: AgNi and AgSnO for durability
- Low contact resistance: 100mΩ max
- Fast switching: 10ms operate and release time
- High insulation resistance: ≥100MΩ
- Robust against shock and vibration
- Wide operating temperature range: -40°C to +85°C
Pinout
Design Notes
- Use a flyback diode across the coil to suppress voltage spikes
- Ensure PCB traces and connectors support high current (up to 40A)
- Consider contact derating for inductive loads such as motors
- Maintain proper spacing for high-current paths to reduce heating
- Verify environmental sealing for automotive applications
Typical Circuit Usage
- Automotive battery switching and power distribution
- Control of high-current loads such as motors and heaters
- Relay interface with microcontroller using driver transistor
- DC load switching in 12V/14V vehicle systems
- Power control modules in industrial equipment
How to Choose This Part
- Select for high-current automotive applications up to 40A
- Choose appropriate contact form (1A, 1B, 1C) based on switching needs
- Ensure compatibility with system voltage (12V/14V DC systems)
- Consider environmental conditions such as vibration and temperature
- Evaluate contact material based on load type and lifespan requirements
Applications
- Automotive electrical systems
- Battery management and power switching
- Electric fans and HVAC systems
- Lighting and auxiliary power control
- Industrial DC switching systems
Alternative / Equivalent Products
- Bosch 0332019150 automotive relay
- Omron G8JN series
- TE Connectivity V23234 series
- Song Chuan 896H series
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For more details, please refer to the file.
HLS-CMA3 Technical Datasheet (PDF)
