Description
ABB CT-ARS.21S OFF DELAY TIME RELAY 1SVR730120R3300
ABB STOTZ-KONTAKT GMBH
CT-ARS.21S
1SVR730120R3300
OFF DELAY TIME RELAY
0,05 S-10 MIN
A1-A2: ~ 24-240V 50/60HZ
2 C/O
LTHE: 4A UIMP: 4KV
FUSE: 6A FAST (NC), 10A FAST (NO)
AC15: 230V 3A DC13: 24V 1,5A
4 016779 851497
MADE IN GERMANY
REF.NO: FKM9542
The ABB CT-ARS.21S is an off-delay time relay engineered for precise timing control in industrial and marine automation applications. It holds output contacts in their energised state for an adjustable period after the control signal is removed, enabling controlled shutdown sequences, de-energisation delays, and time-based interlocking in shipboard switchboards and machinery control panels. Suitable for Business & Industrial automation systems requiring reliable relay-based timing logic.
Key Features
✓ Off-delay timing function with adjustable range from 0.05 seconds to 10 minutes
✓ Wide supply voltage range: A1-A2 approximately 24–240V AC/DC, 50/60 Hz
✓ 2 C/O (DPDT) output contacts rated AC15: 230V 3A and DC13: 24V 1.5A
✓ High impulse withstand voltage (UIMP: 4 kV) with fused output protection — 6A fast on NC, 10A fast on NO
✓ Manufactured in Germany by ABB Stotz-Kontakt GmbH to stringent industrial-grade standards
Marine Applications
Engine room control panels for machinery startup and shutdown timing sequences
Pump and motor off-delay sequencing in bilge, ballast, and cooling water systems
Navigation, safety, and alarm system timing interlocks aboard ship
Bridge automation and integrated vessel management console relay logic circuits
Auxiliary machinery switchboards and automation panels requiring timed de-energisation control
Why Marine Engineers Choose
The ABB CT-ARS.21S is trusted for its robust construction, broad voltage compatibility, and consistent off-delay performance — delivering dependable sequencing and interlock control across diverse marine automation environments where timing precision is critical.
Ideal For
Commercial cargo vessels, offshore platforms, naval ships, ferries, fishing vessels, yachts, and industrial marine installations requiring reliable time relay solutions in automation and control panels.
Technical Support & Compliance
We provide complete solutions including remote troubleshooting, onboard technical support, testing and commissioning, repair services, retrofit and upgrade assistance, and full integration support. To confirm compatibility, please share nameplate photographs, part numbers, system drawings, panel model and version, vessel name and IMO number, and the intended scope of application. Compatibility is subject to confirmation based on provided documentation and system details.
