Beuler BU509TD 12 VDC Automotive 5-Pin SPDT Time Delay Relay with adjustable timing - Delay Off

The Beuler BU509TD is an upgraded time delay relay, perfect for situations where a device needs to remain powered for a set time after a button press or a trigger. With adjustable timing, it's ideal for applications like secret compartments, safes, fans, and automotive installations. Utilizing Bosch-style connections, it supports 30 amps of current, with low coil draw at 120mA. This SPDT relay is versatile, offering easy integration into automotive sound and security systems, ensuring reliable performance across multiple use cases.

Features:
• Standard automotive style relay
• No mounting tab
• Delay Off Version
• Momentary pulse to trigger latching (Requires the removal of 12 volts on the trigger to initiate timer, with constant 12 volts relay is latched like an ordinary 5-pin relay, no timer)
• Low 1volt (1k Ohm) trigger voltage
• Adjustable time latching from 2 seconds to 3 minutes with internal potentiometer, the time delay extends or delays the termination of the relay
• Built in diode to stop timer feedback issues
• Internal green LED to indicate status
• Non-removable cap
• 20 amp / 30 amp rated contacts
• SPDT - Single pole Dual throw
• 12 Vdc rated coil with minimum 8 volt to trigger
• Power consumption @ 12Vdc 120 mA
• Idle current draw 2 mA
• Conventional 87, 87a, 30, 86, and 85 pin locations
• SPDT Change Over NC/NO (form C)
• Compatible with most insulated and non insulated terminals and relay sockets
• Dimensions 1-1/4" (W) x 1-1/4" (D) x 2" (H) with terminals

Pin configuration:
• Pin 30 - Must have constant or accessory 12 volts all-time, as this is what powers the circuit on the relay
• Pin 85 - Ground
• Pin 86 - Single pulse (+12 volts) to trigger time delay off (Constant 12 volts can be applied and once +12 volts is removed relay will stay latched for duration of timer.)
• Pin 87a - +12 volt output (Normally closed contact - on except when time delay is active)
• Pin 87 - +12 volt output (Normally open contact - on for duration of set time)

Uses:
• Low voltage trigger: input will trigger with as little as 1 volt (Constant or pulsed)
• Momentary pulse to timed latch: use a momentary switch to trigger for a short duration (up to 3 minutes)
• Voltage inverter: temporarily reverse the polarity to a drain (requires additional relays

How the unit functions
• Momentary pulse: 12 volt positive momentary pulse connected to Pin 86, once pulse goes to zero the relay will trigger for preset timing
• Constant input: 12 volt positive constant connected to Pin 86, once constant goes goes to zero the relay will trigger for preset timing