The Siemens 3RP1525-1AP308K Electronic On-Delay Timer Relay is a highly reliable and precision-engineered timing device designed for modern industrial automation, process control, machine sequencing, motor control, and electrical panel applications. As part of the globally recognized Siemens SIRIUS 3RP Electronic Timer Series, the 3RP1525-1AP308K offers exceptional timing accuracy, flexible operating ranges, and dependable switching performance, making it an ideal solution for industries that demand precise control and long-term reliability.
Industrial automation systems often require controlled delays between receiving a signal and activating a process or machine function. The Siemens 3RP1525-1AP308K On-Delay Timer is specifically designed to provide this delayed switching action. Once the control voltage is applied, the timer begins counting the preset time interval and activates its output only after the selected delay has elapsed. This functionality is widely used in motor starting circuits, conveyor systems, packaging machines, HVAC equipment, water treatment systems, process automation lines, and sequential machine operations.
One of the standout features of the 3RP1525-1AP308K Electronic Timer Relay is its extensive timing flexibility. The relay supports an adjustable timing range from 0.05 seconds to 100 hours across 15 selectable timing ranges, allowing a single device to handle both short-duration switching tasks and long-cycle industrial processes. This versatility reduces inventory requirements while providing engineers and panel builders with a universal timing solution suitable for a wide variety of applications.
The Siemens 3RP1525-1AP308K is equipped with 1 Changeover Contact (1 C/O), enabling flexible switching operations for both normally open and normally closed control circuits. This contact arrangement simplifies control panel design while ensuring compatibility with a broad range of industrial automation systems. The relay is particularly effective in applications requiring delayed activation of motors, pumps, fans, contactors, solenoid valves, and control circuits.
Designed for industrial flexibility, the timer operates on 24V DC and 24/200–240V AC control voltages, making it suitable for multiple control system architectures. This voltage compatibility helps OEMs, panel builders, and maintenance teams standardize components across various installations while reducing spare part requirements.
Built using Siemens' advanced solid-state electronic timing technology, the 3RP1525-1AP308K On-Delay Timer delivers outstanding performance and repeatability. Siemens specifies a repeat accuracy of ±1% and a setting accuracy of ±5%, ensuring consistent operation even in demanding industrial environments. The relay also incorporates integrated surge suppression technology, helping protect connected control circuits from switching transients and electrical disturbances.
The compact design of the Siemens SIRIUS 3RP1525-1AP308K makes it particularly suitable for modern control panels where space optimization is essential. With a slim 22.5 mm housing width, the relay saves valuable panel space while maintaining easy access for wiring and maintenance. Standard 35 mm DIN rail mounting enables quick installation and seamless integration into automation cabinets, motor control centers, and electrical switchboards.
For enhanced operational visibility, the relay features integrated LED indicators that clearly display power supply status and output switching conditions. These indicators simplify commissioning, troubleshooting, and maintenance activities, helping technicians quickly verify system operation and reduce downtime. Additionally, the timer is designed to provide high electromagnetic compatibility (EMC), ensuring stable performance in electrically noisy industrial environments.
The Siemens 3RP1525-1AP308K Electronic Timer Relay is widely used across industries including manufacturing, food processing, packaging, HVAC, material handling, water treatment, process automation, and infrastructure projects. Its ability to provide precise delayed switching improves equipment protection, enhances process reliability, and contributes to overall operational efficiency.
At SBsmart.in, we supply genuine Siemens industrial automation products trusted by engineers, OEMs, system integrators, and maintenance professionals worldwide. When you choose the Siemens 3RP1525-1AP308K Electronic On-Delay Timer Relay, you are investing in a proven automation solution backed by Siemens engineering excellence, superior quality standards, and long-term reliability.
Whether you are designing a new automation system, upgrading an existing control panel, or replacing a timing relay in a critical application, the Siemens 3RP1525-1AP308K delivers the precision, flexibility, and durability required for today's industrial environments. Choose SBsmart.in for authentic Siemens automation solutions that help maximize productivity and operational performance.
| Specification | Details |
|---|---|
| Product Name | Electronic On-Delay Timer Relay |
| Manufacturer | Siemens |
| Series | SIRIUS 3RP |
| Model Number | 3RP1525-1AP308K |
| SKU | 3RP1525-1AP308K |
| Product Type | On-Delay Timer |
| Timing Function | On-Delay |
| Contact Configuration | 1 Changeover Contact (1 C/O) |
| Time Range | 0.05 Seconds to 100 Hours |
| Number of Time Ranges | 15 Selectable Ranges |
| Control Supply Voltage | 24V DC / 24–200-240V AC |
| Frequency | 50/60 Hz |
| Voltage Type | AC/DC |
| Repeat Accuracy | ±1% |
| Setting Accuracy | ±5% |
| Thermal Current | 5 A |
| Contact Material | AgSnO₂ (Silver Tin Oxide) |
| Mounting Type | 35 mm DIN Rail Mounting |
| Housing Width | 22.5 mm |
| Terminal Type | Screw Terminals |
| Protection Rating | IP20 |
| LED Status Indication | Yes |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Mechanical Endurance | Up to 10 Million Operations |
| Application | Industrial Timing & Automation Control |
| Product Family | Siemens SIRIUS Timing Relays |
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