FH21L 12VDC 90A High Current Latching Relay

FH21L 12VDC 90A High Current Latching Relay is a high-performance electromagnetic latching relay designed for switching high-current AC loads while consuming power only during switching. With a 90A contact rating, a 12V DC coil, and a compact PCB mount design, it is ideal for smart energy meters, EV charging stations, battery management systems (BMS), photovoltaic systems, industrial automation, power distribution equipment, and other high-power switching applications.

Features:

1. 90A High Current Switching Capacity
2. 12V DC Single Coil Latching Design
3. Power Consumed Only During Switching
4. 1 Form A (SPST-NO) and 1 Form B (SPST-NC) Contact Options
5. Silver Tin Oxide (AgSnO₂) Contacts
6. High 4KV Dielectric Strength Between Coil and Contacts
7. Low Initial Contact Resistance
8. Compact PCB Mount Construction
9. High Resistance to Power Frequency Interference
10. IEC62055-31:2005 UC2 Compliant
11. RoHS Compliant

Specifications:

Parameter	Value
Product Type	High Current Latching Relay
Brand	Fanhar
Model	FH21L
Contact Arrangement	1 Form A (SPST-NO) / 1 Form B (SPST-NC)
Coil Voltage	12V DC
Coil Type	Single Coil Latching
Contact Material	AgSnO₂
Rated Load	90A @ 250VAC (Resistive Load)
Maximum Switching Current	90A
Maximum Switching Voltage	277VAC
Maximum Switching Capacity	22500VA
Initial Contact Resistance	≤1mΩ (6VDC, 1A)
Coil Resistance	96Ω ±10%
Rated Coil Current	125mA
Rated Coil Power	Approx. 1.5W
Set Voltage	≤9V DC
Reset Voltage	≤9V DC
Maximum Allowable Coil Voltage	18V DC
Insulation Resistance	≥1000MΩ @ 500VDC
Dielectric Strength (Open Contacts)	2000VAC for 1 Minute
Dielectric Strength (Coil to Contacts)	4000VAC for 1 Minute
Operate Time	≤20ms
Release Time	≤20ms
Mechanical Life	100,000 Operations
Electrical Life	10,000 Operations @ 90A, 250VAC Resistive Load
Electrical Life (UC2 Test)	10,000 Operations @ 60A, 253VAC
Shock Resistance	Functional: 98m/s², Destructive: 980m/s²
Vibration Resistance	10Hz–55Hz, 1.5mm Double Amplitude
Operating Temperature	-40°C to +85°C
Operating Humidity	5% to 85% RH
Mounting Type	PCB Through Hole
Construction	Flux Proof
Dimensions	38 × 30 × 16.5mm
Weight	Approx. 39g
Standard	IEC62055-31:2005 UC2
Compliance	RoHS
Applications	Smart Energy Meters, EV Chargers, Battery Management Systems (BMS), Power Distribution Equipment, Compound Switches, New Energy Systems, Industrial Automation, Solar Power Systems

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Package Includes:

1 x FH21L 12VDC 90A High Current Latching Relay