Weidmüller 8556020000 General Purpose Relay SPDT 6A 230V - Equivalent & Substitute Parts

Part Overview

The Weidmüller 8556020000 is a general purpose relay with SPDT (Single Pole Double Throw) contact configuration, rated for 6A at 230VAC coil voltage. This relay is designed for DIN rail mounting and features a lighted indicator with socket inclusion. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and component sourcing in ongoing applications.

Substiute Parts

8556020000

WeidmüllerIn Stock: 7278556020000 Datasheet

Current PartRFQ

1122840000

WeidmüllerIn Stock: 9931122840000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Weidmüller 1122840000 qualifies as a direct substitute for the 8556020000 based on the following critical parameters:

Matching Electrical Specifications:

• Coil voltage: 230VAC (identical)
• Contact form: SPDT (1 Form C) (identical)
• Contact rating: 6A (identical)
• Switching voltage: 250VAC maximum (compatible; substitute also supports 250VDC)
• Coil type: Non Latching (identical)
• Termination style: Screw Terminal (identical)

Matching Mechanical Specifications:

• Mounting type: DIN Rail (identical)
• Features: Lighted Indicator, Socket Included (identical)

Compliance Alignment:

• RoHS Compliant (both parts)
• REACH Unaffected (both parts)
• ECCN: EAR99 (both parts)

The substitute part 1122840000 belongs to the TERMSERIES line and carries Active product status, providing long-term availability and supply continuity for applications currently using the obsolete MRS series 8556020000.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 1122840000 is the designated substitute for the obsolete 8556020000. Selection of the 1122840000 is supported by:

Product Status Alignment: The substitute part carries Active product status, ensuring continued availability and manufacturing support. The original part's Obsolete classification necessitates transition to an actively produced alternative.

Regulatory Compliance: Both parts maintain RoHS Compliance and REACH Unaffected status, satisfying environmental and regulatory requirements for industrial applications.

Functional Equivalence: Identical electrical ratings (230VAC coil, 6A contact, SPDT configuration) and mechanical specifications (DIN rail mounting, screw terminals, lighted indicator with socket) ensure direct functional replacement without circuit redesign.

Enhanced Operating Range: The substitute part extends the operating temperature range from -25°C ~ 50°C to -40°C ~ 60°C, providing improved performance in wider environmental conditions.

Additional Switching Capability: The 1122840000 supports both 250VAC and 250VDC switching voltages, compared to the original part's 250VAC maximum, offering expanded application flexibility.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 1122840000 directly replace the 8556020000 in existing installations?

A: Yes. Both parts share identical coil voltage (230VAC), contact configuration (SPDT), current rating (6A), mounting type (DIN rail), and termination style (screw terminal). The substitute part maintains all functional and mechanical compatibility required for direct replacement.

Q: What are the key differences between these two relay models?

A: The primary differences are product status (obsolete vs. active), operating temperature range (-25°C ~ 50°C vs. -40°C ~ 60°C), switching voltage capability (250VAC only vs. 250VAC/250VDC), contact material (Silver Tin Oxide vs. Silver Nickel), and response times (operate/release times vary by 2-3 ms). These differences do not affect substitution compatibility for standard 230VAC SPDT applications.

Q: Are there packaging differences between the main part and substitute?

A: The original part (8556020000) is listed with packaging designation "-" while the substitute (1122840000) is supplied in Bulk packaging. Both parts are mounted on DIN rail and include socket and lighted indicator features. Verify bulk packaging specifications with your supplier if specific packaging requirements exist.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 8556020000 and 1122840000 are RoHS Compliant and REACH Unaffected, with identical ECCN (EAR99) and HTSUS (8536.49.0050) classifications.

Q: What is the inventory status for these parts?

A: The original 8556020000 has 697 pieces in stock (new original). The substitute 1122840000 has 931 pieces in stock (new original, bulk packaging). The substitute's active product status ensures ongoing availability beyond current inventory levels.