Understand 8-pin timer relay wiring with easy diagrams. Learn pinout, connection steps, and functions. Perfect for electricians and electronics hobbyists.
SPDT switch light control
With commutable wiring, it is possible to control a light by two or more controls, i.e., two-way or intermediate switches. This arrangement proves particularly beneficial in such areas as corridors, stairways, and long hallways. It enhances availability, security, and ease. This guide contains circuit diagrams, simple formulas, and an inventory of parts used in establishing commutable wiring in a residential or commercial building.
8 pin timer relay connection
The 8-pin timer relay is a general-purpose time delay relay used on automation, control panels, and industrial timing controls. Knowledge of its pinout and wiring assists in adjusting on-delay, off-delay or cyclic applications. It is standard that an 8-pin relay would consist of input voltage and normally open (NO) and normally closed (NC) contacts as well as control coils.
The way you need to wire it is something like this: coil (pins 2 and 7), common (pins 8 and 1), and NO/NC contacts (keep it 3, 4, 5, and 6 depending on the model you have). The timer switches the output on, after a given delay, after being powered. This enables it to be applicable in motor control, lighting, and sequential activities.
timer relay wiring for beginners
| Timer Model | Voltage | Delay Type | Timing Range |
|---|
| H3Y-2 | 12V DC | On-Delay | 0-10s |
| AH3-3 | 220V AC | Off-Delay | 0-60s |
| S1DX-M1C | 24V DC | Repeat Cycle | 1s - 30min |
What is an 8 pin timer relay?
A relay with 8 terminals used to control time-based electrical switching in automation systems.
How do I wire an 8 pin timer relay?
Connect coil to pins 2 & 7, common to pins 1 & 8, NO to 3 & 6, and NC to 4 & 5.
What voltage is required for the timer relay coil?
Depends on model; typically 12V DC, 24V DC, or 220V AC.
What does NO and NC mean in timer relay?
NO means Normally Open (closes after time), NC means Normally Closed (opens after time).
Can I use an 8 pin relay for delay ON function?
Yes, most 8-pin relays support delay ON and other timing modes.
Is a timer relay the same as a normal relay?
No, timer relays include timing control circuits, unlike regular relays.
Where is the timing knob located?
Typically on the front of the relay body, marked with time settings.
Can I use this relay for AC and DC circuits?
Yes, depending on the model and coil voltage rating.
How to test if the timer relay is working?
Apply voltage to the coil and observe delay in switching at the NO/NC contacts.
What are common applications of 8-pin timer relays?
Used in motor controls, lighting automation, industrial machinery, and HVAC systems.
