The Siemens 3RP1513-1AQ308K is an electronic on-delay timer from the Siemens SIRIUS 3RP15 series, designed for industrial automation, machine-control panels and electrical control systems. It features 1 changeover contact (1 C/O), a 5–100 second adjustable timing range, LED indication and screw-terminal connections. The control supply configuration is 24 V AC, 100–127 V AC and 24 V DC at 50/60 Hz.
Siemens' current catalog identifies the 3RP1513-1AQ30 article family as a phased-out product, with the newer 3RP2513-1AW30 listed as its replacement. This is important to consider when sourcing the product for new installations or replacement requirements.
The 3RP1513-1AQ308K is designed to introduce a controlled time delay into an electrical control circuit.
An electronic timer can coordinate the operation of contactors, relays, motors, pumps, fans and other industrial equipment where one operation needs to occur after a predefined delay.
Typical applications include:
Industrial automation
Machine-control panels
Motor-control systems
Pump-control circuits
Conveyor systems
Production machinery
Packaging equipment
Process automation
Relay and contactor control
OEM machinery
The primary function of the 3RP1513-1AQ308K is on-delay timing.
When the control signal is applied, the timer starts counting the selected time period. After the preset delay has elapsed, the output contact changes to its operated state.
A simplified sequence is:
Control Signal ON → Preset Time Delay → Output Operates
This makes the timer useful when a machine or electrical function should start only after another control condition has remained active for a defined period.
Typical applications include:
Delayed motor starting
Delayed contactor energization
Fan activation delay
Pump-start delay
Conveyor sequencing
Machine sequence control
Process timing
Auxiliary switching
The 3RP1513-1AQ308K provides an adjustable timing range of 5 to 100 seconds. Siemens documentation confirms this time range for the 3RP1513-1AQ30 configuration.
This range is suitable for applications requiring moderate time delays in industrial machinery and electrical control circuits.
The actual time setting should be selected according to the machine sequence, motor characteristics and process requirements.
The product is specified with 1 C/O changeover contact.
A changeover contact provides a common connection with normally open and normally closed contact paths, giving flexibility when integrating the timer into different control circuits.
It can be used for:
Contactor control
Relay logic
PLC inputs
Interlocking
Status signalling
Sequence control
Auxiliary switching
Control-system feedback
The connected load should always remain within the applicable contact ratings.
The 3RP1513-1AQ308K configuration includes LED indication, providing a visual indication of the timer's operating condition.
This can be helpful during:
Commissioning
Troubleshooting
Preventive maintenance
Control-panel inspection
Machine servicing
LED indication allows technicians to identify timer activity more easily inside an electrical control cabinet.
The timer supports the specified control-supply configuration of:
24 V AC
100–127 V AC
24 V DC
The AC supply operates at 50/60 Hz.
Before installation, the control supply must be matched with the exact timer marking and the electrical requirements of the control circuit.
The 3RP1513-1AQ30 configuration uses screw terminals, providing a conventional connection method for industrial control panels.
This makes the timer suitable for traditional relay and contactor-based control systems where straightforward panel wiring and maintenance are required.
The 3RP1513-1AQ308K can be used wherever a controlled on-delay is required in an industrial sequence.
Typical applications include:
The timer can provide a delay before energizing a motor contactor or auxiliary control device.
It can help coordinate the delayed activation of conveyor sections or machine stages.
A controlled delay can be used when pump operation needs to follow another process event.
The timer can introduce a delay before activating ventilation equipment.
It can coordinate separate stages of an automated machine cycle.
It can provide controlled timing between different production or process operations.
The 3RP1513-1AQ308K is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its combination of on-delay operation, 1 C/O contact, 5–100 second timing range, LED indication and screw terminals makes it useful for conventional industrial control circuits.
Siemens SIRIUS 3RP electronic timer
Article number 3RP1513-1AQ308K
On-delay timing function
1 C/O changeover contact
5–100 second adjustable timing range
LED indication
Screw terminals
24 V AC control supply
100–127 V AC control supply
24 V DC control supply
50/60 Hz AC operation
Suitable for industrial automation
Suitable for machine-control panels
Suitable for relay and contactor control
Suitable for OEM machinery
On-delay operation: Delays output switching until the selected time has elapsed.
5–100 second range: Suitable for a variety of machine and process timing requirements.
1 C/O contact: Provides flexible switching options.
LED indication: Helps technicians identify the timer's operating state.
AC/DC control options: Supports the specified 24 V AC, 100–127 V AC and 24 V DC supplies.
Screw terminals: Provides a familiar industrial wiring method.
Sequence control: Helps coordinate different machine and process operations.
Compact industrial solution: Suitable for control panels and automation systems.
The Siemens 3RP1513-1AQ308K provides a practical on-delay timing solution for industrial automation and machine-control applications.
Its 5–100 second timing range, 1 C/O changeover contact, LED indication and screw-terminal design make it suitable for delayed motor starting, conveyor sequencing, pump control, machine automation and auxiliary switching applications.
Important for procurement: Siemens' current catalog marks the 3RP1513-1AQ30 as phased out and identifies 3RP2513-1AW30 as the replacement family. For a new installation, buyers should verify whether the original 3RP1513 is required for an existing system or whether the replacement is suitable.
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Major delivery locations include:
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And other major cities across India
It is a Siemens SIRIUS electronic on-delay timer with 1 C/O changeover contact.
The timer provides an adjustable range of 5–100 seconds.
On-delay means the timer waits for the selected time after the control signal is applied before changing the output to its operated state.
It has 1 C/O changeover contact.
Yes. The product configuration includes LED indication.
The corresponding 3RP1513-1AQ30 configuration supports 24 V AC, 100–127 V AC and 24 V DC, with AC operation at 50/60 Hz.
Yes, the product uses screw-terminal connections.
It can be used in motor-control panels, pumps, fans, conveyors, production machinery, packaging equipment and process-control systems.
Siemens' current catalog marks the 3RP1513-1AQ30 configuration as phased out and points to 3RP2513-1AW30 as the replacement.
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 | 3RP1513-1AQ308K |
| SKU | 3RP1513-1AQ308K |
| 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 / 100–127V AC / 24V DC |
| Voltage Type | AC/DC |
| Frequency | 50/60 Hz |
| 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 |
| Thermal Current | 5 A |
| Protection Rating | IP20 |
| Surge Voltage Resistance | 4 kV |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +85°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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