Description
The ABB CR-M024DC4LG is a pluggable miniature interface relay equipped with a built-in LED indicator and a gold-plated contact layer, operating within the CR-M (miniature) relay family. This component establishes galvanic isolation, signal matching, and amplification between sensitive electronic control controllers—such as PLCs, DCS nodes, or industrial PCs—and high-power field actuators like motors, solenoids, and contactors.
+-----------------------------------------------------------+
| ABB CR-M024DC4LG Miniature Relay |
| |
| [ 24 VDC Coil Input ] ---> [ Integrated Gold LED Block ] |
| │ |
| ▼ |
| [ Magnetic Coil Actuator ] |
| │ |
| ▼ |
| [ 4 C/O (SPDT) Contact Pins ] |
| │ |
| ▼ |
| [ Base Socket Options ] -> [ CR-M4LS / CR-M4SF Sockets ] |
+-----------------------------------------------------------+ Commercial & Availability Status
- Condition: New Original, Factory Sealed (Original OEM shelf packaging)
- Availability: In stock
- Lead Time: Ships within 1–2 business days from order confirmation
- Warranty: 12-month comprehensive warranty covering structural and electrical defects
Pricing Note: The listed or displayed price is a reference rate based on current market inventory. Actual procurement costs vary based on volume requirements, wholesale market availability, and regional freight tariffs. Contact our sales office directly to request a formal commercial quotation.
Technical Specifications
| Parameter | Value |
| Model Number | CR-M024DC4LG |
| Order Code | 1SVR405613R1100 |
| Rated Control Supply Voltage | 24 V DC |
| Output Contacts | 4 c/o (SPDT) changeover contacts |
| Contact Material | Silver-nickel alloy (AgNi) with gold plating (Au) |
| Rated Operational Current | 6 A at 250 V AC |
| Contact Load Rating | AC-12 (Resistive): 6 A at 250 V AC
DC-12 (Resistive): 6 A at 24 V DC |
| Minimum Switching Load | 1 V / 1 mA (Due to gold plating) |
| Indicator Feature | Integrated LED (Green for DC coil excitation) |
| Terminal Connection Type | Plug-in pins for mounting on matching bases |
| Dimensions (W x H x D) | 21.2 mm x 35.6 mm x 27.5 mm |
| Weight | 0.033 kg |
Installation and System Integration Notes
Are you switching micro-loads or heavy inductive actuator coils with this relay? The gold-plated contacts on the CR-M024DC4LG are engineered specifically to prevent oxidation when switching extremely low electrical loads (down to 1 V, 1 mA). Well, technically it supports up to 6 A at 250 V AC, but be aware that if you apply a high-power load to these contacts even once, the delicate gold layer will immediately burn off. Once the gold layer is compromised, the relay reverts to a standard silver-nickel contact, which requires higher minimum voltages to reliably pierce standard surface oxidation.
When installing the relay into its socket—such as the standard CR-M4LS logical base—ensure the plastic retention clip is securely locked into place. Don’t underestimate this step, as severe high-frequency vibration within control panels located near heavy rotating machinery can cause unclipped pluggable relays to back out of their socket pins over time, generating intermittent connection dropouts.
Verify structural dimensions and wiring pinout layouts with the official ABB Product Data Sheet (Document ID 1SVC405600M0000) prior to finalizing your electrical panel assembly layouts.
Global Trade & Shipping Logistics
Shipping low-mass, high-volume industrial control relays across international trade channels requires strict compliance with standard commodity classification standards.
- HS Code (Harmonized System): 85364110 (Electrical relays for a voltage not exceeding 60 V)
- ECCN (Export Control Classification Number): EAR99 (No specific export license required for most commercial destinations, subject to standard restricted-party screening)
- Incoterms Options: Ex Works (EXW), Free Carrier (FCA), or Cost, Insurance, and Freight (CIF) to your designated port of entry.
- Customs Documentation: Every international shipment includes an itemized Commercial Invoice, a detailed Packing List specifying net/gross weights, and a Certificate of Origin where required by regional free trade agreements.
- Transit Packaging: Relays are packed in factory tubes or multi-pack boxes, wrapped in shock-absorbent bubble layers, and placed inside rigid corrugated outer cartons to protect the pin alignments during global air transit.
For urgent panel building deadlines or breakdown maintenance, we utilize priority air freight services (DHL Express, FedEx International Priority, or UPS Worldwide Saver) to minimize lead times. Standard customs processing usually clears within 24 to 48 hours provided the importer of record documentation is complete.
Frequently Asked Questions
- What does the “L” and the “G” denote in the CR-M024DC4LG part number?The “L” specifies that the relay includes an integrated LED indicator built directly into the housing for immediate visual troubleshooting of the coil’s power state. The “G” indicates that the contacts are gold-plated (Gold-plated AgNi), enabling reliable operation within low-current low-voltage signal monitoring applications.
- Which base sockets are compatible with this specific relay?This miniature relay interfaces with ABB’s CR-M series sockets. Commonly utilized bases include the CR-M4LS (logical socket with screw terminals), the CR-M4SS (standard socket with screw terminals), and the CR-M4LC (socket equipped with spring-clamp push-in terminals for high-vibration applications).
- Can this relay be operated manually without energizing the 24 V DC coil?Yes, the relay housing features an integrated blue manual test button. Pressing this mechanical lever toggles the position of the internal contacts to allow quick circuit validation and wiring integrity testing during initial system commissioning.
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