The Siemens 3RP1901-0A8K is a multifunction electronic timer from the Siemens 3RP timer series, designed for industrial automation, control panels and electrical control systems. It provides flexible timing functionality with 1 changeover contact (1 C/O) for controlling equipment and process sequences according to predefined time intervals.
The multifunction design makes this timer suitable for applications where different timing functions may be required within a single control system.
The 3RP1901-0A8K belongs to the Siemens 3RP range of electronic timing relays used for automation and control applications.
Electronic timers are commonly used to introduce controlled time delays into electrical control circuits. They can help coordinate the operation of contactors, relays, motors, valves and other industrial equipment.
Typical applications include:
Industrial automation
Machine-control panels
Motor-control systems
Conveyor systems
Pump-control applications
Production machinery
Packaging equipment
Process automation
Lighting-control circuits
OEM machinery
A major advantage of the 3RP1901-0A8K is its multifunction capability.
A multifunction timer can be configured for different timing requirements, allowing one device to support multiple control-system functions instead of requiring a separate timer for every application.
Depending on the selected timing function and control arrangement, electronic timers can be used for:
Delayed switching
Time-delayed starting
Time-delayed stopping
Sequential control
Pulse timing
Interval control
Equipment coordination
Process timing
Control-circuit delay functions
The exact timing functions and operating modes should be selected according to the manufacturer's application instructions and the requirements of the electrical circuit.
The 3RP1901-0A8K is specified with 1 C/O contact, also known as a changeover contact.
A changeover contact provides a common terminal with normally open and normally closed contact paths, allowing the timer output to be used flexibly within a control circuit.
It can be used for:
Switching control signals
Relay logic
Contactor control
PLC inputs
Interlocking
Status signalling
Sequence control
Auxiliary switching
This gives panel builders flexibility when integrating the timer into different control architectures.
The Siemens 3RP1901-0A8K can be incorporated into control systems where equipment needs to operate according to a predefined time sequence.
Typical applications include:
The timer can be used in motor-control circuits where a controlled delay is required between different operating actions.
Timing functions can help coordinate conveyor sections, motors or process steps.
Timers can be used where delayed starting, stopping or sequencing is required.
The device can provide timing functions for machine sequences and coordinated operations.
Timing delays can be introduced between different stages of a production or process-control sequence.
The 3RP1901-0A8K can be used alongside other industrial control components such as:
Contactors
Overload relays
Pushbuttons
Selector switches
Control relays
PLCs
Sensors
Circuit breakers
Motor-control devices
Other Siemens SIRIUS components
A typical application may use the timer to generate a delayed control signal for a contactor or another switching device.
The 3RP1901-0A8K is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its multifunction capability can help simplify panel design by allowing one timer to handle different timing requirements across a range of control applications.
Siemens 3RP electronic timer
Article number 3RP1901-0A8K
Multifunction timer
1 C/O changeover contact
Electronic timing operation
Suitable for industrial control circuits
Suitable for automation systems
Suitable for sequence control
Suitable for machine-control applications
Suitable for OEM machinery
Suitable for electrical control panels
Suitable for process automation
Suitable for relay and contactor control
Multifunction operation: One timer can support different timing requirements.
Flexible output: 1 C/O contact provides versatile switching options.
Control-system integration: Suitable for relay, contactor and automation circuits.
Space-efficient: A multifunction timer can reduce the need for multiple dedicated timing devices.
Sequence control: Useful for coordinating different machine functions.
Industrial suitability: Designed for machine and automation control applications.
OEM-friendly: Suitable for standardized machine-control designs.
The Siemens 3RP1901-0A8K provides a flexible electronic timing solution for industrial control systems requiring different timing functions through a single device.
Its multifunction capability and 1 C/O changeover contact make it suitable for machine sequencing, delayed switching, relay logic and process-control applications.
For OEMs, panel builders and automation integrators, the timer can be integrated with Siemens contactors, relays, pushbuttons, PLCs and other automation components to create reliable timed control functions.
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.
Major delivery locations include:
Faridabad
Gurgaon/Gurugram
Delhi
Delhi NCR
Noida
Greater Noida
Haryana
Punjab
Mumbai
Pune
Ahmedabad
Bengaluru
Hyderabad
Chennai
Kolkata
Jaipur
Chandigarh
Lucknow
Indore
Surat
Vadodara
Nagpur
Coimbatore
And other major cities across India
It is a Siemens 3RP multifunction electronic timer with 1 C/O changeover contact.
A multifunction timer can provide different timing functions, allowing it to be configured for various control requirements.
The product is specified with 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 industrial automation, machine-control panels, motor-control systems, conveyor systems, pumping applications and process automation.
Yes. A timer with a suitable contact configuration can be incorporated into a contactor-control circuit where the electrical ratings and control architecture are compatible.
Yes. The timer can be incorporated into suitable PLC and relay-control architectures for timing and sequence functions.
Common applications include delayed switching, motor sequencing, conveyor timing, pump control, machine sequencing and process timing.
Yes. It is suitable for OEMs, 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.
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| Specification | Details |
|---|---|
| Product Name | Electronic Timer |
| Manufacturer | Siemens |
| Series | SIRIUS 3RP |
| Model Number | 3RP1901-0A8K |
| SKU | 3RP1901-0A8K |
| Product Type | Multi-Function Electronic Timer |
| Contact Configuration | 1 Changeover Contact (1 C/O) |
| Functions Supported | 8 Timing Functions |
| Timing Functions | ON Delay, OFF Delay, ON+OFF Delay, Flashing, Pulse Make, Pulse Break, Pulse Shaping, Additive ON Delay |
| Operating Principle | Electronic Timing Relay |
| Mounting Type | DIN Rail Mounting |
| Housing Design | Compact Industrial Module |
| Status Indication | LED Indicators |
| Timing Range Compatibility | 0.05 Seconds to 100 Hours (with compatible timer relay) |
| Switching Accuracy | High Precision Timing Control |
| Application | Industrial Automation & Control Systems |
| Usage Areas | Motor Control, Process Control, Packaging, Material Handling |
| Installation | Control Panels & Electrical Cabinets |
| Product Family | Siemens SIRIUS Timing Relays |
| Brand | Siemens |
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