Overview
The Siemens 3RP1513-1AQ30 is a solid-state on-delay time delay relay from the Sirius 3RP series. This classic industrial timing relay delivers reliable pulse-free switching for motor control, pump sequencing, furnace ignition delays, and other process timing applications. The unit mounts directly to 35 mm DIN rail and is wired via screw-type terminals for secure, field-serviceable connections.
Key Features
- On-Delay Function: Adjustable timing from 5 to 100 seconds with precision timing control.
- Single Changeover Contact: 1CO (1 SPDT) switching arrangement rated for 3 A at 250 VAC / 30 VDC.
- Low-Voltage Coil: 24 VDC nominal supply; accepts 100–127 VAC switching voltage for flexible control circuit design.
- LED Status Indicator: Built-in LED provides immediate visual feedback of relay state and timing operation.
- DIN Rail Mount: Compact 22.5 mm wide footprint for space-efficient panel layouts; fits standard 35 mm DIN profiles.
- IP20 Protection: Sealed against dust and accidental finger contact, suitable for enclosed control cabinets.
Technical Specifications
- Supply Voltage (Coil): 24 VDC ±10%
- Switching Voltage: 100–127 VAC
- Switching Current (Contact): 3 A max at 250 VAC / 30 VDC
- Time Adjustment Range: 5–100 seconds (continuously adjustable potentiometer)
- Contact Arrangement: 1 Changeover (1CO / SPDT)
- Connection: Screw-type terminals for auxiliary and control circuits
- Operating Temperature: 0–55 °C
- Dimensions (WxHxD): 22.5 × 83 × 91 mm
- Weight: 0.42 lbs (0.19 kg)
- Protection Class: IP20 (DIN EN 60529)
- Mounting: 35 mm DIN rail (top-hat profile)
Typical Applications
The 3RP1513-1AQ30 is ideal for time-delayed starting in HVAC systems, furnace warm-up cycles, pump priming delays, motor soft-start sequencing, and logic-level signal conditioning. Common uses include:
- Motor control and soft-start delay circuits
- Pump station and compressor startup sequencing
- Furnace ignition and warm-up protection delays
- Fan motor warm-up and cooling cycles
- Machine cycle synchronization and interlock timing
- Light load activation or equipment ramp-up control
Compatibility & Replacements
The 3RP1513-1AQ30 is a used or refurbished unit from the discontinued Siemens Sirius 3RP series (manufacturer discontinuation: 10/01/2021). Modern replacement units include the 3RP2513-1AW30, which offers expanded functionality and solid-state switching. For legacy system maintenance and repair, the 3RP1513-1AQ30 remains a cost-effective solution with proven reliability in field deployment. Verify control voltage and contact load specifications before substitution.
