The Siemens 3RP1533-1AP308K is an on-delay electronic timer from the Siemens 3RP series, designed for industrial automation, machine-control panels and electrical control systems. It provides 1 C/O changeover contact for flexible switching and timing applications.
The on-delay function allows a connected output to change state after a predefined time following application of the control signal, making it useful for machine sequencing, delayed starting and process-control applications.
The 3RP1533-1AP308K belongs to the Siemens 3RP range of electronic timing relays used to introduce controlled time delays into industrial control circuits.
Electronic timers can coordinate the operation of:
This makes the timer suitable for both conventional electrical control panels and industrial automation systems.
The main function of the 3RP1533-1AP308K is on-delay timing.
With an on-delay timer, the output changes to its operated state only after the control signal has been applied for the configured time.
A simplified sequence is:
Control Signal ON → Preset Time Delay → Output Operates
When the control signal is removed, the output returns according to the timer's specified operating characteristics.
On-delay timing can be useful for:
The 3RP1533-1AP308K is specified with 1 C/O contact, also known as a changeover contact.
A C/O contact provides a common connection with normally open and normally closed contact paths, giving flexibility when integrating the timer into control circuits.
It can be used for:
The connected load should always remain within the applicable contact ratings.
The on-delay function of the 3RP1533-1AP308K makes it useful wherever one machine operation needs to occur after another operation has been active for a defined period.
Typical examples include:
A timer can introduce a delay before energizing a contactor or another motor-control device.
Timing can help coordinate different conveyor motors or machine sections.
A delayed-start function can be used when pump operation needs to follow another control event.
The timer can provide delayed activation within a control sequence.
It can coordinate different stages of an automated machine cycle.
The 3RP1533-1AP308K can be integrated with other control components such as:
A typical application may use the timer to provide a delayed control signal to a contactor or relay.
The 3RP1533-1AP308K is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its on-delay timing function and 1 C/O changeover contact provide a flexible solution for conventional control circuits and machine-sequence applications.
The Siemens 3RP1533-1AP308K provides a practical on-delay timing solution for industrial automation and machine-control applications.
Its 1 C/O changeover contact allows the timer to be used in different control arrangements, while the on-delay function helps coordinate equipment that needs to operate after a predefined delay.
For OEMs, panel builders and automation integrators, it is suitable for delayed motor starting, sequencing, process timing and auxiliary control applications.
SB Smart supplies Siemens industrial electrical and automation products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and all major cities across India.
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It is a Siemens 3RP on-delay electronic timer with 1 C/O changeover contact.
On-delay means the timer waits for the configured period after the control signal is applied before changing the output to its operated state.
It has 1 C/O changeover contact.
C/O means changeover contact, providing a common connection with normally open and normally closed contact paths.
It can be used in motor-control panels, pumps, fans, conveyors, production machinery, packaging equipment and process-control systems.
Common applications include delayed motor starting, conveyor sequencing, pump control, fan control, machine sequencing and process timing.
Yes. Its changeover contact can be incorporated into a suitable contactor-control circuit, provided the electrical ratings are compatible.
Yes. It can be incorporated into suitable PLC, relay and contactor control architectures.
Yes. It is suitable for OEMs, electrical panel builders, automation integrators and industrial maintenance applications.
You can explore the Siemens product range at SB Smart for Siemens electronic timers, contactors, relays and other industrial automation products..
| Specification | Details |
|---|---|
| Product Name | Electronic On-Delay Timer Relay |
| Manufacturer | Siemens |
| Series | SIRIUS 3RP |
| Model Number | 3RP1533-1AP308K |
| SKU | 3RP1533-1AP308K |
| Product Type | On-Delay Timer |
| Timing Function | On-Delay |
| Contact Configuration | 1 Changeover Contact (1 C/O) |
| Time Range | 5 – 100 Seconds |
| Control Supply Voltage | 24V AC / 200–240V AC / 24V DC |
| Voltage Type | AC/DC |
| Technology | Solid-State Electronic Timer |
| Repeat Accuracy | < ±1% |
| Setting Accuracy | < ±5% |
| Mounting Type | 35 mm DIN Rail Mounting |
| Housing Width | 22.5 mm |
| Terminal Type | Screw Terminals |
| Status Indication | LED Indicators |
| Protection Rating | IP20 |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +80°C |
| Mechanical Endurance | Up to 30 Million Operations |
| Contact Material | AgSnO₂ (Silver Tin Oxide) |
| Application | Delayed Switching & Automation Control |
| Product Family | Siemens SIRIUS Timing Relays |
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