AZ9731-1C-12DC4 — 12 V Mini-ISO SPDT Automotive Relay
This 5-pin power relay fits Mini-ISO sockets and switches high-current loads in 12 V systems. The C4 version includes a sealed, shrouded cover and a steel mounting bracket.
Key Specifications
Contact form: SPDT (1 Form C), 5 blades labeled 30/85/86/87/87a
Ratings: 40 A (NO) / 30 A (NC) @ 14 VDC; max switching voltage 75 VDC
Coil: 12 VDC, ≈90 Ω (~133 mA); must-operate 7.8 V; typical operate/release 7 ms/5 ms
Contacts: Silver tin oxide; terminals: 0.250 in (6.3 mm) quick-connect
Temperature range: −40 °C to 125 °C; sealed C4 housing with steel bracket
Footprint: Mini-ISO size ~26.5 × 24.5 mm class; plug-in
Compliance: ISO/TS 16949, ISO 14001
Installation & Location
Commonly installed in engine-bay fuse/relay boxes or under-dash power blocks
Match the socket pin map (30/85/86/87/87a) and coil/contact ratings to your original relay
Disconnect the battery, remove the old relay vertically, and press the new relay fully into the socket
Compatibility Guidance
Compatible with Mini-ISO SPDT 5-pin sockets in 12 V systems—confirm pin layout, ratings, and footprint before purchase
Compatible with receptacle connectors TE 5-160558-9 / 5-160526-9 and sockets Zettler ST9721-U1 / ST9721-U2 / ST9721-U3
Cross-Reference (verify datasheets before substituting)
Compatible with Hongfa HFV15/12-Z5T-R (SPDT 5-pin, Mini-ISO class)
Compatible with Picker Components PC792A-1C-C1-12S-DN-X (SPDT 5-pin, Mini-ISO class)
Compatible with Omron G8JN-1C* and Song Chuan 896H-1CH* types sharing the same pin map and ratings
Included
1 × AZ9731-1C-12DC4 relay