ABB 1SVR740180R3300 CT-APS.22P OFF-Delay Electronic Timer Relay

Product Overview

ABB 1SVR740180R3300 is the CT-APS.22P electronic timer relay from the ABB CT-S range of control and timing relays. It is designed for applications that require a defined delay after the control condition is removed. The device provides an OFF-delay, also referred to as delay-on-break timing, allowing a connected circuit to remain energized for a selected period before the relay output changes state.

The CT-APS.22P is a single-function timer with ten selectable time ranges covering 0.05 seconds to 300 hours. Its broad timing range allows the same device type to be used for short control delays as well as long-duration process and equipment sequences. The relay provides two changeover outputs and operates from a wide control supply range of 24 to 240 V AC or 24 to 48 V DC.

CT-APS.22P OFF-Delay Function

The primary function of ABB 1SVR740180R3300 is OFF-delay timing. During normal operation, the control signal activates the relay according to the device’s operating logic. When the triggering condition is removed, the internal timing sequence begins. The relay output remains in its active state for the selected delay period and changes back when the preset time has elapsed.

This operating principle is useful when equipment must continue operating for a defined period after a control signal has been removed. Applications can include delayed switching, ventilation run-on functions, controlled shutdown sequences, motor-related auxiliary circuits, machine control logic and industrial automation systems.

The actual switching behavior depends on the wiring arrangement and selected control circuit. The device should therefore be connected according to the applicable ABB wiring diagram and the requirements of the control system.

Ten Selectable Time Ranges

The CT-APS.22P provides ten selectable timing ranges from 0.05 seconds to 300 hours. This range gives the timer considerable flexibility for industrial control applications. Short timing settings can be used for rapid sequencing, while longer ranges can be applied to equipment that requires extended operation after the control signal is removed.

The selected time range and adjustment value determine the actual delay. When configuring the device, the required timing function should first be established, followed by selection of the appropriate range and time setting.

For accurate system operation, the timer setting should be coordinated with the timing requirements of the controlled equipment. Where the timing value is part of a safety-related or process-critical sequence, the complete control circuit should be evaluated rather than considering the timer independently.

Control Supply Voltage

ABB 1SVR740180R3300 accepts a rated control supply of 24 to 240 V AC and 24 to 48 V DC. The wide AC input range allows the timer to be integrated into many conventional industrial control circuits, while the DC range supports common low-voltage automation supplies.

The supply voltage should be selected within the specified operating range. When installing the timer, verify whether the available control voltage is AC or DC and confirm that it corresponds to the electrical requirements of the CT-APS.22P.

Correct identification of the supply terminals is also important. The power supply and control input should be wired according to the manufacturer’s connection diagram. Incorrect wiring may prevent the timing function from operating as intended.

Two Changeover Relay Outputs

The CT-APS.22P provides two changeover relay outputs, commonly described as 2 c/o or two SPDT contacts. This arrangement gives each output a normally open and normally closed contact that can be used according to the requirements of the control circuit.

The two relay outputs can be used to switch separate control circuits or to provide complementary control and indication signals. Their contacts are rated up to 250 V and 4 A according to the ABB product specification. The actual load connected to the contacts must remain within the applicable electrical ratings.

When integrating the timer into a PLC, relay logic or contactor-control system, the output contacts can provide a timed switching interface between the timer and the controlled equipment. The external circuit should include appropriate protection where required by the installation design.

Voltage-Related Control Input

The CT-APS.22P uses a voltage-related control input. This means that the timing function is triggered through an applied control voltage rather than a volt-free triggering contact. This characteristic should be considered when designing or modifying the associated control circuit.

A control voltage must be supplied in accordance with the specified electrical arrangement. The triggering signal can originate from another control device, switch, relay or automation system. The control circuit should be designed so that the timer receives a clearly defined signal during the required operating sequence.

Easy Connect Push-In Terminals

ABB 1SVR740180R3300 incorporates Easy Connect Technology with push-in terminals. This connection arrangement is intended to simplify wiring and reduce the tools required for standard conductor connections.

Push-in terminals can be useful in control cabinets where multiple timer relays and other modular devices are installed on DIN rail. The connection system supports appropriate rigid and fine-stranded conductors according to the specified terminal capacity and wiring requirements.

Before wiring, the conductor type and cross-sectional area should be checked against the applicable ABB technical documentation. Correct insertion and secure electrical contact are important for reliable operation of the control circuit.

DIN-Rail Installation

The CT-S timer range is designed for modular control-panel installation, and the CT-APS.22P can be mounted on a DIN rail. Its compact housing allows the timer to be integrated into electrical control cabinets and automation panels where standardized rail-mounted components are used.

During installation, sufficient space should be provided for wiring and access to the adjustment controls. The surrounding equipment should not obstruct the timer’s terminals or timing adjustment interface.

The installation environment should also remain within the specified ambient operating conditions. ABB specifies an operating ambient temperature range of approximately -25 °C to +60 °C for this device.

LED Indication and Configuration

The CT-APS.22P incorporates LED indication to provide information about the device’s operating condition. Visual indication can assist technicians during commissioning and troubleshooting by showing the state of the timer and control sequence.

The timing range and delay value can be selected using the corresponding adjustment controls on the front of the device. Before commissioning, the selected range should be checked carefully because the same adjustment position can represent different time values depending on the selected range.

Industrial Automation Applications

ABB 1SVR740180R3300 can be integrated into a wide range of industrial automation and electrical control systems. Typical applications include delayed shutdown, ventilation control, motor control sequences, machine automation, lighting control, pump-related functions and general relay-based timing circuits.

For example, an OFF-delay timer can keep an auxiliary device operating for a defined period after the primary control signal has been removed. This type of sequence can be useful where equipment requires continued operation during a shutdown process.

The timer can also be used as part of a larger relay-control architecture. Its two changeover outputs provide additional flexibility when a timed signal must be distributed to more than one control function.

Technical Selection Considerations

When selecting ABB 1SVR740180R3300 for an application, several parameters should be verified. These include the required timing function, available control supply, desired timing range, output contact requirements, control input method and mounting arrangement.

• Product code: 1SVR740180R3300
• Type: CT-APS.22P
• Function: OFF-delay timer
• Timing ranges: 10 selectable ranges
• Timing range: 0.05 s to 300 h
• Control supply: 24-240 V AC / 24-48 V DC
• Output: 2 changeover contacts
• Contact rating: up to 250 V / 4 A
• Control input: voltage-related triggering
• Connection: Easy Connect push-in terminals
• Mounting: DIN rail
• Operating ambient temperature: -25 °C to +60 °C

Replacement and Model Identification

When replacing an existing timer relay, the complete ABB ordering code should be checked. ABB 1SVR740180R3300 corresponds specifically to the CT-APS.22P configuration. Similar CT-S products can have different timing functions, output arrangements, supply ranges or connection technologies, so a visually similar timer should not automatically be considered an equivalent replacement.

The original device label, control voltage, timing function, output contact configuration and wiring diagram should be compared before replacement. This is particularly important when the timer is part of a machine sequence or automated process.

Technical Summary

ABB 1SVR740180R3300 is a CT-APS.22P electronic OFF-delay timer relay belonging to the ABB CT-S range. It provides ten selectable timing ranges from 0.05 seconds to 300 hours and accepts 24-240 V AC or 24-48 V DC control supply.

The device provides two changeover relay outputs, a voltage-related control input and Easy Connect push-in terminals. Its modular construction and DIN-rail mounting make it suitable for integration into industrial control panels and automation systems.

For correct application, the control supply, timing range, output contact requirements, triggering method and installation conditions should be verified against the system design and the technical documentation for ABB 1SVR740180R3300.