This part is a kind of semiconductor called SLA-48VDC-S-L-C.

Function of this product has Relay.

Manufacturers : Songle

Image and pinout :

Some of the text within the PDF file :

SONGLE RELAY RELAY ISO9002 SLA 1. MAIN FEATURES ﾷ Up to 30A switching in SPST and 20A switching in spot arrangements. ﾷ Available as an open-frame relay, with a snap-on dust cover or with an immersion cleanable, plastic sealed case. 2. APPLICATIONS ﾷ Used for power switching, Electrical Heater, ventilator, Air conditioning, Refrigerating, Automobile and House-hold Appliance. 3. ORDERING INFORMATION SLA Model of relay SLA XX VDC Nominal coil voltage 05 06 09 12 18 24 48 110VDC S Structure S:Sealed type Coil L sensitivity C Contact form A:1 form A B:1 form B C:1 form C L:0.93W D:Special F:Flux free type 4. RATING 20A/28VDC 250VAC 30A/30VDC 250VAC CCC FILE NUMBER:CQC03001003728 UL/CUL FILE NUMBER: E179944 TUV FILE NUMBER: R50056114 30A/250VDC NO:20A/240VAC 28 [ ... ]

SLA-48VDC-S-L-C PDF Datasheet Download