SPNO PCB Mount Latching Relay 50 A, 12V dc For Use In Power Applications

  • RS Stock No. 476-577
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CN
Product Details

High Power Latching Relays

Maximum switching capability up to 50A
Lamp load up to 5000W
Capacitor load up to 200μF (min inrush current @ 500A/10μs)
4kV dielectric strength (between coil and contacts)
Wash tight
Creepage distance 8mm


Set and Reset coils have a common positive connection; both coils should not be simultaneously energised. Neither coil should be continuously energised for more than 1 minute.


UL (File no. E134517), CQC (File no. CQC06017016719)

Attribute Value
Coil Voltage 12 V dc
Contact Configuration SPNO
Mounting Type PCB Mount
Switching Current 50 A
Maximum Switching Voltage AC 440V ac
Length 39mm
Depth 15mm
Height 30.2mm
Dimensions 39 x 30.2 x 15mm
Terminal Type Through Hole
Application Power
Coil Power 3W
Contact Material Silver Alloy
Features Capacitor Load up to 200 μF (Min Inrush Current at 500 A/10 μs), Creepage Distance 8 mm, Lamp Load up to 5000 W, Maximum Switching Capability up to 50 A, Wash Tight, 4 kV Dielectric Strength (Between Coil & Contacts)
Minimum Operating Temperature -40°C
Maximum Operating Temperature +70°C
Isolation Coil To Contact 4kV ac
Standards Met RoHS Compliant
Operating Temperature Range -40 → +70°C
Coil Resistance 48 Ω
Maximum Switching Power AC 12.5 kVA
Life 1000000 (Mechanical) cycles
Temporarily out of stock - back order for despatch 06/10/2020, delivery within 4 working days from despatch date
Price Each
Was SGD16.25
SGD 15.04
(exc. GST)
SGD 16.09
(inc. GST)
Per unit
1 - 9
10 - 49
50 - 99
100 - 249
250 +
Packaging Options:
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