409-1AH-V1 M01 12VDC Coil 200A High Power Automotive Relay 1 Pack, 4 Stud SPNO NO Battery Disconnect Relay, 2-M8 2-M4 Terminals, Sealed Flanged Mount, Model-Match Replacement

Product Fact BlockModel/check number: 409-1AH-V1 M01 / 409-1AH-V1 style relay.Package: 1 relay.Coil: 12VDC coil with polarity-marked diagram on the housing.Contact form: SPNO / normally open high-current relay series.Terminal layout: 4-stud layout with 2 large M8 main studs and 2 small M4 coil/control studs.Mounting: sealed flanged housing with mounting ears.Fitment ChecklistMatch the original relay model number, visible marking and 12VDC coil rating.Confirm the 4-stud layout, M8/M4 stud sizes, mounting-hole spacing and polarity diagram.Verify the circuit rating, cable size, fuse protection and service manual before use.Common Use ReferencesThis model-match replacement relay may be used in high-current 12V DC systems that already require a 409-1AH-V1 M01 / 409-1AH-V1 style relay, including battery disconnect, power distribution, bus/truck auxiliary circuits and equipment control panels depending on the original wiring design.Install NotesDisconnect power before service and avoid shorting the main terminals.Keep oil, grease, dirt and loose metal away from the terminal area.Use suitable cable lugs, bus bars and torque practices for the load; do not over-tighten the studs.Replace damaged wiring, overheated terminals or corroded hardware before returning the circuit to service.Mini FAQQ: Is this a vehicle-specific relay? A: No verified year/make/model fitment is published here; order by model number, coil voltage and terminal layout.Q: Can it replace any 12V relay? A: No. The original relay must match the contact form, current rating, stud layout, mounting style and circuit requirements.Q: What symptoms may lead to replacement? A: A failed relay can be related to no-power, intermittent high-current circuit operation, overheating or damaged terminals, but diagnosis should confirm relay failure.

• [MODEL & SPEC CHECK] 409-1AH-V1 M01 replacement relay for model-match service; 12VDC coil, 1A/SPNO normally open contact form, high-current 200A relay series, 4-stud layout with 2-M8 main studs and 2-M4 coil/control studs. Before ordering, match the model number, coil voltage, stud layout, polarity diagram and mounting-hole layout.
• [HIGH-CURRENT POWER RELAY] Built for high-current switching such as battery disconnect, power distribution, bus/truck auxiliary circuits, equipment control panels or other 12V DC systems that already use this relay style. Application varies by wiring design; verify the circuit rating and service manual before replacement.
• [4-STUD FLANGED MOUNT] Black sealed flanged housing with mounting ears; stud-terminal layout helps buyers compare against the original unit. Confirm 2 large main terminals, 2 smaller control terminals, hardware clearance, cable lug size and mounting space before installation.
• [INSTALLATION NOTE] Disconnect power before service. Install the relay in the same orientation as the original, keep oil and debris away from the main terminals, use suitable cables/bus bars for the load and avoid over-tightening the M8 screws. Inspect wiring, lugs and insulation for heat damage or corrosion.
• [COMPATIBILITY NOTE] This relay is intended for applications using 409-1AH-V1 M01 / 409-1AH-V1 style 12VDC high-power relays. Brand names, manufacturer logos and model references, if present on the original part, should be used only to verify compatibility; do not order if the voltage, contact form or stud layout is different.