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ABB CR Series Plug-in Relay and Socket
Model: CR-P024DC2
4-hour response · Pricing in SAR · Delivery across all KSA regions
CR-P024DC2 — ABB CR Series Plug-in Relay and Socket
ABB CR series plug-in relays and sockets are the industry-standard control circuit switching components for industrial and building automation panels, providing robust electromechanical switching for PLC output interfacing, timer signal routing, interlocking, and signal conditioning in compact DIN rail or socket-mounted format. The CR-P (PCB-pin) and CR-M (module) series relays offer 2CO (DPDT) and 4CO (4PDT) contact configurations with coil voltages spanning 12 V DC to 240 V AC, covering every control circuit voltage combination encountered in Saudi Arabia's diverse industrial and building services panel designs. The standardised CR-P and CR-M socket footprints allow any coil voltage version to be replaced with another without rewiring — a critical feature in maintenance environments where stocking a single socket type covers all relay coil voltage variants that may be installed across a large facility.
The mechanical latch test button on the CR relay socket allows maintenance technicians to manually force the relay to its energised position and hold it there without applying coil voltage, enabling circuit testing and load verification without energising the control circuit — a safe test procedure aligned with Saudi Arabia's LOTO requirements for electrical maintenance. The LED coil status indicator illuminates when the coil is energised, providing an immediate visual indication of relay state without a multimeter, and the free-wheeling diode option on DC coil versions suppresses the inductive voltage spike generated when the coil is de-energised, protecting PLC output modules from the back-EMF damage that is a common cause of output card failure in industrial control systems. The gold-alloy contact option for low-level signal applications maintains reliable contact resistance below 100 mΩ down to 10 mA switching currents, covering the full range from PLC output interface (load-switched) to signal relay (milliamp-level) applications.
In Saudi Arabia, CR series relays are the most widely installed plug-in relay in industrial MCC panels, building automation control panels, HVAC control boards, and process instrument panels across ARAMCO, SABIC, SEC, and the commercial building sector. Their ubiquity reflects the practical engineering advantages: stocking a single socket type and a handful of coil voltage variants covers the complete interchangeable relay requirement for an entire plant, reducing spare parts inventory cost and ensuring immediate availability. ABB's CR series is listed in ARAMCO's approved materials catalogue (SAMSS) for control circuit relay applications, and the standard DIN rail socket design is specified in SEC and SABIC panel building standards. Panel builders across Riyadh and Jubail install thousands of CR relays monthly in plant automation and building services control panels.
Razz Middle East holds comprehensive CR series stock in both CR-P and CR-M sizes, across all coil voltages (12 V DC, 24 V DC, 24 V AC, 110 V AC, 230 V AC) and contact configurations (2CO and 4CO), with sockets, LED indicator modules, and suppression diode accessories, for same-day supply to panel builders and maintenance teams across Saudi Arabia.
Technical Specifications
Full specifications for the CR-P024DC2
- Coil Voltages
- 12 V DC, 24 V DC, 24 V AC, 110 V AC, 230 V AC
- Contact Config
- 2CO (DPDT) / 4CO (4PDT)
- Contact Rating
- 8 A at 250 V AC (resistive)
- Socket
- CR-P (PCB pin) / CR-M (module)
- LED Indicator
- Available (coil status)
- Test Button
- Mechanical latch hold
- Suppression
- Free-wheeling diode (DC coils)
- Contact Material
- AgNi standard, gold-alloy (low level)
- Mounting
- Socket on DIN rail / direct PCB
- Standard
- IEC 61810-1
Key Features & Benefits
- Standardised socket footprint allows any coil voltage variant to replace another without socket rewiring, enabling a single CR-P or CR-M socket type to serve every relay position in a panel regardless of coil voltage differences.
- Mechanical latch test button holds the relay in the energised position without applying coil voltage, enabling safe circuit testing and load verification under LOTO conditions without connecting control power to the circuit under test.
- LED coil status indicator provides instant visual relay state confirmation without a multimeter, allowing maintenance technicians to verify relay operation at a glance during panel fault diagnosis and commissioning.
- Free-wheeling diode on DC coil versions suppresses the inductive back-EMF spike when the coil is de-energised, protecting PLC digital output cards and solid-state control devices from voltage transients that cause premature output failure.
- Gold-alloy contact option maintains reliable switching below 100 mΩ contact resistance at currents as low as 10 mA, covering the full range from PLC output interface relay (500 mA) to analogue signal relay (10 mA) in instrumentation panels.
- 4CO (4PDT) configuration provides four independent SPDT contact pairs in a single relay, multiplying PLC output capacity for applications requiring multiple switching actions from a single PLC output channel.
- Coil voltage range 12–240 V AC/DC covers every control circuit voltage used in Saudi Arabian industrial and building automation panels, from 24 V DC instrument bus systems to 230 V AC building services control circuits.
Industrial Applications in Saudi Arabia
- PLC digital output interface relays in ARAMCO GOSP and petrochemical plant automation panels, where CR relays buffer PLC output signals from motor contactor coil currents and provide electrical isolation between control and power circuits.
- HVAC BMS control panel relay switching for fan start/stop, valve actuator control, and damper position feedback in commercial towers and industrial facilities across Riyadh, Jeddah, and the Eastern Province.
- Motor control centre (MCC) interlocking and sequence control circuits in water treatment and desalination facilities, where the mechanical latch test function enables safe relay testing during planned maintenance under LOTO procedures.
- Building fire alarm system relay interfaces between Notifier, Siemens, and Honeywell fire control panels and field devices including suppression system triggers, elevator recall, and door release mechanisms.
- Process instrument panel signal conditioning and alarm relay circuits in SABIC and SADAF petrochemical plant instrument rooms, where gold-alloy contacts ensure reliable switching of milliamp-level instrument signals.
- Timer relay output interfaces in star-delta and DOL motor starter panels, where the CR relay switches contactor coil circuits from the timer output contact with sufficient contact rating for industrial contactor coil loads.
- Test and commissioning relay circuits in SEC substation relay panels and SCADA RTU cabinets, where the mechanical latch test button enables functional testing of trip and alarm circuits without relay coil power.
Industrial Supplier in Saudi Arabia
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Frequently Asked Questions — CR-P024DC2
Common questions from buyers in Saudi Arabia and the GCC