Overview
The Siemens 3RP1532-1AQ30 time relay is an off-delay timing device engineered for industrial automation and process control applications. This relay accepts 100-127VAC 50/60Hz control voltage and provides 24VAC/DC output, with an adjustable time-delay range from 1.5 to 30 seconds. Built for legacy systems and retrofit applications where precise timing control is critical, the 3RP1532-1AQ30 delivers reliable performance in machinery control, sequencing circuits, and automation logic.
Key Features
- Off-Delay Function: Time begins after coil de-energization, ideal for controlled shutdown sequences and equipment run-down periods
- 1 SPDT Contact: Single pole, double-throw changeover contact for flexible switching logic
- Dual-Voltage Input: Operates on 100-127VAC 50/60Hz control supply
- Adjustable Timing: 1.5–30 second range covers most standard automation delays
- 24VAC/DC Output: Compatible with 24-volt logic circuits common in PLC and relay panel applications
- Compact Design: Screw terminal construction for easy DIN rail or panel mounting
Technical Specifications
- Part Number: 3RP1532-1AQ30
- Manufacturer: Siemens
- Control Voltage: 100–127VAC, 50/60Hz
- Output Voltage: 24VAC/DC
- Time-Delay Range: 1.5–30 seconds
- Function: Off-Delay (Interval on release)
- Contact Configuration: 1 SPDT changeover contact
- Operating Temperature: -10 to +60°C (typical industrial range)
- Weight: 0.99 lbs
- Connection: Screw terminals
- Series: Siemens 3RP15 Timing Relays
Typical Applications
- Motor run-down and deceleration timing in machinery control
- Pump discharge delay and cooldown cycles
- Conveyor system sequencing and load balancing
- Pressure relief and safety shutdown delays
- Fan coil and HVAC auxiliary timing circuits
- Legacy PLC input/output interfacing and relay ladder logic upgrades
Compatibility & Replacements
The 3RP1532-1AQ30 is discontinued by Siemens (since January 2015) but remains available through industrial surplus and rebuilder channels. Direct replacements from the current 3RP1 series include the 3RP1533-1AQ30 (multi-function variant with extended timing ranges) or 3RP1525-1AQ30 (solid-state alternative with 0.05s–100h range). For systems requiring the exact legacy configuration, the 3RP1532-1AQ30 is suitable as a drop-in replacement in existing 24VAC/DC control circuits. Verify connector pinout and mounting before substitution. Cross-reference part compatibility with your automation engineer or controls integrator.
