DS20-RD Terminal Block Connector Equivalent & Substitute Parts

Part Overview

The DS20-RD is a 2-position feed-through terminal block connector manufactured by Eaton - Bussmann Electrical Division, part of the Magnum® DS series. This component is designed for screw termination of conductors in the 12-22 AWG range with a rated current of 20 A (UL) and 24 A (IEC) at 600 V (UL) and 1000 V (IEC) respectively. The DS20-RD is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system compatibility and ensure continued availability for applications requiring this terminal block specification.

Substiute Parts

DS20-RD

Eaton - Bussmann Electrical DivisionIn Stock: 1173DS20-RD Datasheet

Current PartRFQ

1020040000

WeidmüllerIn Stock: 17171020040000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS20-RD is determined by the following critical parameters:

• Electrical Compatibility: Current and voltage ratings must meet or exceed the original specification (20 A UL / 24 A IEC; 600 V UL / 1000 V IEC)
• Mechanical Compatibility: Number of positions (2), number of levels (1), terminal width (5.1 mm), and termination style (screw) must remain constant
• Wire Gauge Compatibility: The substitute must accommodate the 12-22 AWG range; extended ranges are acceptable if the minimum and maximum values encompass the original specification
• Material and Certification: Insulation material must maintain UL94 V-0 flammability rating; color should remain red for circuit identification consistency

The Weidmüller 1020040000 qualifies as a substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 1020040000 is a functional substitute for the obsolete DS20-RD based on matching mechanical configuration, equivalent UL electrical ratings, and identical flammability certification. Both components feature 2-position, single-level screw-terminated feed-through terminal blocks with 5.1 mm terminal width and UL94 V-0 insulation material.

The 1020040000 provides extended wire gauge accommodation (12-30 AWG versus 12-22 AWG) and higher UL current rating (25 A versus 20 A), offering improved flexibility for conductor sizing. However, the IEC voltage rating of the 1020040000 is 800 V compared to the DS20-RD's 1000 V. Applications requiring the full 1000 V IEC rating must evaluate this difference against system requirements.

The 1020040000 is currently in active production with RoHS compliance and REACH unaffected status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 1020040000 directly replace the DS20-RD in all applications?

A: The 1020040000 is mechanically and functionally compatible for most applications. However, systems designed specifically for 1000 V IEC operation should verify that the 800 V IEC rating of the substitute is acceptable for the intended circuit.

Q: What is the significance of the extended wire gauge range (12-30 AWG) on the 1020040000?

A: The extended range allows the substitute to accommodate larger conductors up to 30 AWG without requiring a different terminal block model. Applications using 12-22 AWG conductors remain fully compatible.

Q: Are the insulation materials interchangeable between the DS20-RD and 1020040000?

A: Both components maintain UL94 V-0 flammability certification. The DS20-RD uses Polyamide (PA66) Nylon 6/6, while the 1020040000 uses Thermoplastic Wemid. Both materials meet the same safety standard for this application category.

Q: Does the higher UL current rating (25 A) of the 1020040000 affect compatibility?

A: No. A higher current rating indicates the substitute can safely handle equal or greater current loads. Applications rated for 20 A UL operation are fully compatible with the 25 A rated substitute.

Q: What packaging format is available for the 1020040000?

A: The 1020040000 is supplied in box packaging, compared to the DS20-RD which had no specified packaging designation.