Why Choose the ABB CT-MVS.21S Multifunction Timer?
The ABB CT-MVS.21S is a versatile multifunction electronic time relay from the ABB CT-S timer range, designed to provide flexible timing and switching functions for industrial control and automation systems. It combines 10 selectable timing functions with two changeover relay outputs, allowing a single compact device to handle a wide range of control requirements.
The CT-MVS.21S provides 10 time ranges from 0.05 s to 300 h and operates from a universal 24–240 V AC/DC control supply. Its voltage-related, non-floating control input can be used to initiate the selected timing function, while a remote potentiometer can be connected for fine adjustment of the time delay.
The timer features 2 c/o (SPDT) relay contacts rated at 250 V / 4 A, with the second changeover contact selectable as an instantaneous contact. Its 22.5 mm wide housing uses screw connection technology with double-chamber cage terminals and is designed for DIN rail installation in industrial control panels.
Key Advantages
- Versatile multifunction electronic time relay for industrial automation.
- 10 selectable timing functions in one compact device.
- 10 time ranges from 0.05 s to 300 h.
- Universal 24–240 V AC/DC control supply.
- 2 c/o (SPDT) relay outputs for flexible switching.
- Second c/o contact can be selected as an instantaneous contact.
- Voltage-related, non-floating control input for triggering the timing sequence.
- Remote potentiometer connection for fine adjustment of timing.
- Compact 22.5 mm wide DIN rail housing.
- Screw connection technology with double-chamber cage terminals.
Key Features
- ABB CT-S timer range.
- 10 timing functions: ON-delay, OFF-delay with auxiliary voltage, impulse-ON, impulse-OFF with auxiliary voltage, symmetrical ON- and OFF-delay, flasher starting with ON, flasher starting with OFF, star-delta change-over with impulse, pulse former and ON/OFF function.
- 10 selectable time ranges from 0.05 s to 300 h.
- 24–240 V AC/DC rated control supply.
- 2 c/o (SPDT) contacts.
- 250 V / 4 A rated output contacts.
- Voltage-related, non-floating control input.
- Remote potentiometer connection for fine timing adjustment.
- Second c/o contact selectable as an instantaneous contact.
- Three LEDs for operational status indication.
- Front-mounted operating controls for function and time adjustment.
- Screw connection technology with double-chamber cage connection terminals.
- DIN rail mounting for control cabinet installation.
Flexible Timing for Industrial Automation
The ABB CT-MVS.21S provides a broad selection of timing functions within a single control device, allowing one timer to handle applications ranging from conventional ON-delay and OFF-delay operation through to impulse, flasher, pulse-forming and star-delta timing sequences. This flexibility can simplify control panel design where different timing requirements need to be accommodated.
Its universal AC/DC control supply, voltage-related control input and two changeover relay outputs make the CT-MVS.21S suitable for integrating timing functions into industrial automation equipment. The optional remote potentiometer provides additional flexibility where timing needs to be adjusted away from the timer itself.
Typical Applications
- Industrial automation and control panels.
- Machine sequencing and timed control.
- Motor control and star-delta starting sequences.
- Flashing and signalling applications.
- Timed switching and pulse generation.
- Conveyor and production machinery control.
- Process automation and equipment sequencing.
- Industrial furnace control systems.
- Applications requiring adjustable ON/OFF timing.
