Timed Relay IRT IRTA

The Schneider Electric Acti9 iRTA A9E16065 time delay relay is a modular device designed to perform an on-delay timing function for a load. When power is applied to the relay, the timing cycle begins and, once the set time has elapsed, its output contact changes state to activate the connected circuit. It offers a wide adjustable range from 0.1 seconds to 100 hours, includes 1 changeover contact rated up to 8 A, and supports supply voltages of 24 to 240 V AC at 50/60 Hz or 24 V DC.

Thanks to its modular format of only 18 mm width and 35 mm DIN rail mounting, the A9E16065 can be easily integrated into electrical panels for automation, control, lighting, HVAC, and other installations where it is necessary to delay the start-up of a load for a set period of time.

Time delay relay with on-delay function

The main function of the Schneider Electric iRTA is to delay the energization of a load. Operation starts as soon as the relay is powered.

The operating sequence is simple:

• Supply voltage is applied to the iRTA.
• The timing cycle starts automatically.
• During the set time, the output contact remains in its initial state.
• When timing T ends, the relay switches its output contact.
• The connected load or control circuit can then be energized.

This function corresponds to an ON-delay or on-delay timing and is useful when one device must start after another device or when an electrical command needs to be deliberately delayed.

Adjustable timing from 0.1 seconds to 100 hours

One of the main advantages of the A9E16065 is its wide timing range. Schneider Electric allows times to be set between:

• Minimum time: 0.1 seconds.
• Maximum time: 100 hours.

This range is equivalent to a maximum of 360,000 seconds and allows a single relay to be used in very different applications, from short delays of fractions of a second to sequences that must wait several hours before activation.

Adjustment via front rotary knob

The time is set directly from the front of the relay using a rotary knob. This system makes commissioning easier and allows the timing to be changed without external software programming.

Schneider Electric specifies a setting accuracy of ±10% of full scale and a repeat accuracy of ±0.5% when conditions remain constant.

1 changeover output contact

The iRTA includes 1 C/O changeover contact, also known as an inverse contact or SPDT. This configuration provides a common contact that switches between one normally closed output and one normally open output.

The presence of a changeover contact provides flexibility to create different control logics, allowing use of both the rest position and the activated position after the timing has elapsed.

Switching capacity up to 8 A

Schneider Electric specifies the output contact as:

• Rated operational current: 8 A at 250 V AC.
• Rated operational current: 8 A at 250 V DC.
• Minimum switching load: 10 mA at 5 V DC.

The actual switching capacity must be checked according to the type of load, especially when controlling inductive loads, contactors, solenoid valves, or other equipment that may generate inrush currents or surges during opening.

Universal 24 to 240 V AC supply

The Schneider Electric A9E16065 supports a wide supply range, making it easy to use in different electrical panels without needing multiple versions for each voltage.

• AC supply: 24-240 V AC.
• Tolerance: approximately ±10%.
• Frequency: 50/60 Hz.
• DC supply: 24 V DC.
• DC tolerance: approximately ±10%.

This flexibility is especially useful for machine builders, maintenance teams, and installers working with different control voltages.

LED operating indicators

The relay includes front LED indication to make it easy to check its status.

• Green LED: indicates power supply present.
• Flashing indication: shows that the timing cycle is in progress.

This visual indication makes it possible to quickly verify whether the relay is powered and whether it is still counting the set time.

35 mm DIN rail mounting

The A9E16065 is designed for fixed installation on a 35 mm symmetrical DIN rail, allowing it to be mounted alongside miniature circuit breakers, residual current devices, contactors, impulse relays, and other Acti9 modular devices.

Its reduced width makes it suitable even for panels where available space is limited.

Only 18 mm wide

The Schneider Electric Acti9 iRTA occupies only 2 x 9 mm modules, equivalent to 1 standard 18 mm module.

Its approximate dimensions are:

• Width: 18 mm.
• Height: 93 mm.
• Depth: 72 mm.
• Weight: approximately 65 g.

This compact format makes it possible to add a timing function to the electrical panel with minimal space usage.

Connection via tunnel terminals

The relay uses tunnel terminals to ensure secure conductor connection.

Schneider Electric specifies connection capacities such as:

• Without ferrule: up to 2 rigid conductors of 2.5 mm².
• With ferrule: up to 2 stranded conductors of 1.5 mm².

Connections must be made following the manufacturer’s instructions and respecting the characteristics of the conductor used.

Minimum control pulse duration

The technical documentation specifies a minimum pulse duration greater than 100 ms for the corresponding control conditions.

This should be taken into account when the relay is integrated into systems controlled by pushbuttons, PLCs, or other devices capable of generating short signals.

Fast reset time

Schneider Electric specifies a maximum reset time of approximately 100 ms after a power interruption.

This feature allows a new timing cycle to start shortly after the supply has been removed and correctly restored.

High mechanical durability

The Acti9 iRTA is designed to provide a long service life in automation applications:

• Mechanical durability: more than 5,000,000 cycles.
• Electrical durability: more than 100,000 cycles in AC-1 category.

The actual electrical life may vary depending on voltage, current, load type, and switching frequency.

IP20 protection rating

The device has an IP20 protection rating as an individual component.

It is designed to be installed inside an electrical enclosure or panel that provides proper environmental protection and limits access to live parts.

Wide operating temperature range

The Schneider Electric A9E16065 can operate within the following environmental limits:

• Operating temperature: -5 to 55 °C.
• Storage temperature: -40 to 70 °C.

These values allow it to be used in a wide variety of indoor electrical panels within the conditions specified by Schneider Electric.

Applications of the Schneider Electric A9E16065

The on-delay function can be used in many automation and control systems, for example:

• Sequential load starting.
• Delayed activation of contactors.
• Timed lighting control.
• Ventilation and HVAC.
• Pumping systems.
• Automation of small equipment.
• Industrial machinery.
• Building electrical panels.
• Start-up sequences.
• Alarm and signaling control.

Sequential equipment start-up

A common application is to prevent several loads from starting at the same time. The iRTA can be used to introduce a delay between the switching of different contactors, reducing the simultaneity of inrush current peaks.

It can also be used when an auxiliary device must only be activated after another system has been running for a set period of time.

Difference between iRTA and other timers

Reference A9E16065 corresponds specifically to the iRTA with on-delay. It should not be confused with other time relays in the Acti9 range that perform different functions, such as off-delay or multifunction timing.

In the iRTA, the cycle starts when the relay itself is powered and the output switches when the configured time T ends.

Schneider Electric A9E16065 technical characteristics

• Brand: Schneider Electric.
• Reference: A9E16065.
• Range: Acti9.
• Family: iRT.
• Short name: iRTA.
• Type: time relay.
• Function: on-delay.
• Operation: delays the energization of a load.
• Timing range: 0.1 seconds to 100 hours.
• Equivalent range: 0.1-360,000 seconds.
• Adjustment type: front rotary knob.
• Accuracy error: ±10% of full scale.
• Repeat accuracy: ±0.5%.
• Output contacts: 1 C/O.
• Contact rated current: 8 A at 250 V AC.
• Rated current in DC: 8 A at 250 V DC.
• Minimum load: 10 mA at 5 V DC.
• AC supply voltage: 24-240 V AC.
• Frequency: 50/60 Hz.
• DC supply voltage: 24 V DC.
• Minimum pulse duration: greater than 100 ms.
• Maximum reset time: approximately 100 ms.
• Indication: front LED.
• Power indicator: green LED.
• Timing indication: flashing LED.
• Mounting: fixed on 35 mm symmetrical DIN rail.
• Modular width: 2 x 9 mm modules.
• Width: 18 mm.
• Height: 93 mm.
• Depth: 72 mm.
• Weight: approximately 65 g.
• Color: white.
• Terminals: tunnel type.
• Protection rating: IP20.
• Mechanical durability: more than 5 million cycles.
• Electrical durability: more than 100,000 cycles in AC-1.
• Operating temperature: -5 to 55 °C.
• Storage temperature: -40 to 70 °C.
• EAN: 3606480377419.

Simple and compact timing for electrical panels

The Schneider Electric Acti9 iRTA A9E16065 provides a simple solution for delaying the connection of electrical loads without the need for a PLC or programmable controller. Its range from 0.1 seconds to 100 hours makes it adaptable to very different sequences through a simple front adjustment.

The universal 24-240 V AC supply, the ability to also operate at 24 V DC, the 8 A changeover contact, and its 18 mm format make it easy to integrate into many automation, control, and distribution panels.

Important: the A9E16065 is a control and timing relay and does not provide protection against overloads, short circuits, or earth leakage. The load and circuit must have the appropriate electrical protection. When the load exceeds the relay contact’s capacity or utilization category, it must be controlled through a suitably rated contactor or power relay.