RL439 Pro Series Motor Starter - Schneider Electric Thermal Overload Relay, Industrial Contactor Switch

RL439 current sensor

RL439 automotive sensor

RL439 industrial sensor

RL439

RL439 current sensor delivers high-precision measurement solutions for automotive and industrial applications. The RL439 automotive sensor ensures reliable performance in vehicle systems, while the RL439 industrial sensor features robust construction for harsh environments. Both variants offer accurate current monitoring, compact design, and compliance with industry standards, ideal for power management across multiple sectors.

Specification

SEODescription

The RL439 current sensor is a versatile automotive and industrial sensor designed for precise monitoring of electrical currents in demanding environments. It features 3 analog inputs and 2 digital outputs, enabling direct integration with control modules, PLCs, or telemetry systems. Supporting both SPI and I2C communication interfaces, the RL439 operates across a wide voltage range of 5-36VDC and withstands temperatures from -40°C to +125°C, making it suitable for automotive powertrains, industrial automation, and energy management systems. As an automotive sensor, it excels in EV battery monitoring and charging systems, while its industrial sensor variant is optimized for motor control and smart grid applications. Key advantages include ±0.5% measurement accuracy and IP67 protection, though its specialized calibration requirements may increase implementation complexity compared to standard current sensors.

SEOSpecification

Parameter	Specification
Application Domain	RL439 current sensor, Automotive & Industrial systems
Current Measurement Range	±50A to ±1000A (configurable)
Operating Temperature	-40°C to +150°C (RL439 automotive sensor grade)
Accuracy	±1% full scale (25°C), ±2.5% over temperature
Supply Voltage	3.3V to 5.5V DC
Output Type	Analog voltage / PWM / Digital (I²C/SPI)
Response Time	<3μs (RL439 industrial sensor variant)
Isolation Voltage	2500Vrms (UL60950 certified)
Package Type	Surface-mount SOIC-16 (automotive-grade)
Compliance Standards	AEC-Q100 (RL439 automotive sensor), IEC 61000-4 (industrial)

SEOQandA

question:What happens if a product is found refurbished after malfunctioning?
answer:We offer a full refund or replacement upon verification of refurbishment.
question:Do you provide technical selection services?
answer:Yes, our experts assist with tailored technical specifications and product recommendations.
question:What is the lead time for custom orders?
answer:Standard lead time is 4-6 weeks, adjustable based on complexity and quantity.

SEOQandA_Product

question:RL439 fails to connect to the host system.
answer:Check USB/interface cable integrity and reinstall device drivers. Ensure correct COM port settings.
question:RL439 returns inconsistent measurement data.
answer:Verify sampling rate configuration. Reset to factory settings and recalibrate using reference standards.
question:RL439 firmware update process gets interrupted.
answer:Use official firmware files, disable background apps during update, and maintain stable power supply.
question:RL439 sensors show constant offset errors.
answer:Perform manual zero-point calibration via device menu. Replace sensors if physical damage is detected.
question:RL439 randomly reboots during operation.
answer:Test with regulated power supply. Check for overheating and ensure firmware version matches hardware revision.