Overview
The IDEC RTE-B1AF20 is a versatile multi-function electronic timer designed for precise timing control in building automation systems (BAS), industrial machinery, and process automation. This socket-mounted timer is ideal for Building Automation Systems, offering multiple timing functions and a wide range of adjustable delay periods. The timer functions and time ranges are easily selected by setting external switches, and the knob on the front of the timer is used to set the precise delay period within the selected time range.
Key Features
- Power-triggered timer functions include ON-Delay, Interval, OFF-Cycle, and ON-Cycle
- 2 Form C DPDT (delay outputs) contact configuration
- 10 A resistive contact load rating at 240 VAC, 30 VDC; 7 A inductive at 240 VAC, 30 VDC; 1/6 HP at 120 VAC; 1/3 HP at 240 VAC
- Time ranges from 0.1 seconds to 600 hours with five dial positions (0–1, 0–3, 0–10, 0–30, 0–60) for precise time selection
- Blade-type socket terminal design for secure, tool-free installation
- External function selector switches for configurable timing operation
Technical Specifications
- Input voltage: 100–240 VAC ±10% to –20% (50/60 Hz); 12 VDC ±10%; 24 VAC/VDC ±10% to –15%
- Contact configuration: 2 Form C, DPDT (delay outputs)
- Contact load ratings: 10 A resistive at 240 VAC, 30 VDC; 7 A inductive at 240 VAC, 30 VDC; 1/6 HP at 120 VAC; 1/3 HP at 240 VAC
- Power consumption: 2.2 VA maximum
- Repeat accuracy: ±0.25% maximum, 10 ms reset time
- Mechanical life expectancy: 50,000,000 operations; electrical: 250,000 operations
- Timing adjustment method: Hand dial with external range selector
- Mounting: Blade plug-in socket (SR3B-05 series)
Typical Applications
- Building automation control systems (BAS)
- Pump start/stop sequencing and delay functions
- Motor soft-start and overload protection timing
- Lighting and HVAC control with time-dependent switching
- Process automation requiring multi-function delay timing
- Industrial machine cycle timing and interlock control
Compatibility & Replacements
Compatible With
- RTE Series socket-mounted bases (SR3B blade-type sockets)
- Standard 120/240 VAC control circuits
- Building automation control panels and industrial relay racks
- HVAC, lighting, and process control systems requiring time-delay switching
- OEM equipment and machinery requiring precision timing control
Replaces / Drop-In Replacement For
- Earlier IDEC RTE-B1 series timers with the AF20 contact configuration
- Other multi-function 10A DPDT timers requiring 600-hour maximum delay capability
- Verify compatibility with your original equipment documentation before ordering
Works With
- Industrial control systems and electrical schematics supporting 120/240 VAC input
- Relay-based automation and hard-wired logic circuits
- Building automation integration platforms using time-delay modules
- PLC and discrete control systems requiring socket-mounted timer expansion












