The FH31LA-100 is a high-performance latching relay that can switch 100A of high current. It is designed for smart meters and other uses, and it meets the IEC62052-31:2005 UC3 standard and is RoHS approved.
High current capacity: Maximum switching current 100A, rated load 100A/250VAC
Versatile configurations: single coil and dual coil options available, single coil switches state through a single coil, dual coils control closure and disconnection respectively.
Eco-friendly design: composed of eco-friendly materials and RoHS-compliant.
Compact dimensions: externally, it measures merely 54.9 x 35 x 17.7 mm, making it suitable for automated installation.
Exceptional reliability: The breakdown voltage of up to 4kV between the coil and contact point guarantees secure operation in high voltage conditions. Mechanical life of 100,000 times, electrical life in line with IEC62055-31 test requirements.
Good anti-interference performance: with strong resistance to industrial frequency interference, can work stably in complex electromagnetic environment.
Excellent mechanical properties: strong resistance to shock and vibration, mechanical life of 1×10^5 times, electrical life under different conditions also has a high number of operations to ensure long-term stable operation.
Contact configuration: 2A (2 normally open) or 2B (2 normally closed)
Contact material: AgSnO₂ (silver tin oxide)
Contact resistance: ≤1.0mΩ (initial value, 6VDC 1A test condition)
Maximum switching voltage: 277VAC
Maximum switching capacity: 25000VA
Low contact resistance: Initial contact resistance ≤1.0mΩ (6VDC 1A), guaranteeing efficient current transmission.
Elevated insulation resistance: initial insulation resistance of 1000MΩ (500VDC), inhibiting leakage.
Robust electrical insulation: endure 2000VAC for 1 minute between open connections and 4000VAC for 1 minute between the coil and contacts.
Rapid switching time: Both closing and disconnecting times are ≤25ms, ensuring a swift response to control inputs.
High load rating: Rated load 100A, 250VAC, maximum switching capacity 25000VA.
The FH31LA-100 relay is particularly suitable for:
Smart meters
Electricity metering equipment
High current switching control systems
Power applications requiring low power consumption
Status Setting: Default closed status at delivery, need to reset according to demand before use.
Protection measures: Avoid dropping the product or being affected by external force to avoid damage.
Voltage Requirement: The excitation voltage should be up to the rated voltage, it is recommended that the actual driving voltage is 1 - 1.5 times of the rated voltage, pulse width ≥ 100ms, avoid long time excitation.
Load Terminal Handling: It is imperative to note that load terminals are not conducive to the processes of reflow soldering, wave soldering, or tin soldering. It is therefore recommended that spot soldering be employed in such instances.
The FH31LA-100 relays are distinguished by their superior performance and adaptable configuration, rendering them suitable for a range of application scenarios. They are particularly well-suited for use with smart meters and similar devices.
