Weidmüller 8556080000 General Purpose Relay SPDT 6A 5V - Equivalent & Substitute Parts

Part Overview

The Weidmüller 8556080000 is a general purpose relay with SPDT (Single Pole Double Throw) contact configuration, rated for 6A at 5VDC coil voltage. This relay is designed for DIN rail mounting and features a lighted indicator with socket inclusion. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and new design implementations where this relay specification remains required.

Substiute Parts

8556080000

WeidmüllerIn Stock: 10198556080000 Datasheet

Current PartRFQ

1122740000

WeidmüllerIn Stock: 9391122740000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 8556080000 is determined by the following critical parameters:

• Coil Voltage: 5VDC (exact match required)
• Contact Form: SPDT (1 Form C) (exact match required)
• Contact Rating: 6 A minimum (equal or higher acceptable)
• Mounting Type: DIN Rail (exact match required)
• Termination Style: Screw Terminal (exact match required)
• Coil Type: Non Latching (exact match required)

The substitute part Weidmüller 1122740000 meets all mandatory substitution criteria. It maintains identical coil voltage, contact configuration, current rating, mounting method, and termination style. The substitute part is from an active product series with enhanced specifications including extended operating temperature range and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 1122740000 is the direct functional equivalent for the obsolete 8556080000. Selection of this substitute is supported by:

• Identical electrical specifications for coil voltage (5VDC), contact configuration (SPDT), and current rating (6A)
• Active product status ensuring continued availability and supply chain reliability
• RoHS compliance certification, meeting current environmental and regulatory standards
• Extended operating temperature range (-40°C to 60°C versus -25°C to 50°C), providing broader application flexibility
• Integrated diode feature in the substitute part offers enhanced protection for inductive load switching applications
• Maintained compatibility with DIN rail mounting infrastructure and screw terminal connection methods

Frequently Asked Questions (FAQ)

Q: Can the 1122740000 directly replace the 8556080000 in existing installations?

A: Yes. Both relays share identical coil voltage (5VDC), contact configuration (SPDT), current rating (6A), mounting type (DIN Rail), and termination style (Screw Terminal). The substitute part is functionally compatible for direct replacement.

Q: What is the significance of the diode feature in the 1122740000?

A: The integrated diode in the 1122740000 provides transient suppression for inductive loads. This feature protects the relay coil and connected circuitry from voltage spikes during switching operations, enhancing reliability in applications with inductive components.

Q: Does the extended operating temperature range of the 1122740000 affect compatibility?

A: No. The extended range (-40°C to 60°C) is a performance enhancement that does not compromise compatibility. Applications operating within the original temperature specification (-25°C to 50°C) will function identically with either part.

Q: Are there packaging differences between these parts?

A: The 8556080000 is supplied in standard packaging, while the 1122740000 is supplied in bulk packaging. Both are suitable for DIN rail installation; packaging format does not affect electrical or mechanical compatibility.

Q: What compliance certifications apply to the substitute part?

A: The 1122740000 is RoHS compliant and REACH unaffected. Both parts carry EAR99 export classification and share the same HTSUS code (8536.41.0020).