Weidmüller 1971610000 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1971610000 is a 4-position terminal block plug with male pins, 0.150" (3.81mm) pitch, designed for 180° free-hanging in-line applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance. The substitute part 2444090000 provides functional continuity for applications requiring this connector type.

Key Parameters

Parameter	Value
Manufacturer Part Number	1971610000
Manufacturer	Weidmüller
Category	Terminal Blocks
Series	Omnimate SC
Product Status	Obsolete
Number of Positions	4
Pitch	0.150" (3.81mm)
Type	Plug, Male Pins
Mounting Type	Free Hanging (In-Line)
Current - IEC	17.5A
Voltage - IEC	320 V
Wire Gauge Range	16-28 AWG (0.2-1.5mm²)
Operating Temperature	-50°C ~ 120°C
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution between the main part (1971610000) and the equivalent part (2444090000) is based on strict alignment of the following critical parameters:

Connector Type & Configuration: Both are 4-position terminal block plugs with male pins in the Omnimate SC series
Electrical Specifications: Identical current (17.5A IEC, 10A UL) and voltage ratings (320V IEC, 300V UL)
Pitch & Positioning: Both maintain 0.150" (3.81mm) pitch with 4 positions per level
Wire Compatibility: Both accept 16-28 AWG (0.2-1.5mm²) wire gauges
Termination Method: Both use screw-clamping yoke (tension sleeve) termination
Environmental Ratings: Matching operating temperature range (-50°C ~ 120°C), UL94 V-0 flammability rating, and IP20 ingress protection
Compliance: Both are RoHS compliant with identical ECCN and HTSUS classifications

The primary distinction is product status: 1971610000 is obsolete while 2444090000 is active, making the latter the recommended procurement choice for new designs and ongoing supply.

Parameter Comparison

Parameter	1971610000 (Main Part)	2444090000 (Substitute)
Manufacturer Part Number	1971610000	2444090000
Manufacturer	Weidmüller	Weidmüller
Series	Omnimate SC	Omnimate SC
Product Status	Obsolete	Active
Number of Positions	4	4
Pitch	0.150" (3.81mm)	0.150" (3.81mm)
Type	Plug, Male Pins	Plug, Male Pins
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination Style	Screw - Clamping Yoke (Tension Sleeve)	Screw - Clamping Yoke (Tension Sleeve)
Current - IEC	17.5A	17.5A
Voltage - IEC	320 V	320 V
Current - UL	10 A	10 A
Voltage - UL	300 V	300 V
Wire Gauge Range - AWG	16-28 AWG	16-28 AWG
Wire Gauge Range - mm²	0.2-1.5mm²	0.2-1.5mm²
Color	Orange	Orange
Operating Temperature	-50°C ~ 120°C	-50°C ~ 120°C
Contact Mating Finish	Tin	Tin
Features	Ejector Latches, Retention Latches (Non-Wire Side)	Ejector Latches, Retention Latches (Non-Wire Side)
Material Flammability Rating	UL94 V-0	UL94 V-0
Ingress Protection	IP20	IP20
Screw Size	M2	M2
Wire Strip Length	7mm	7mm
Contact Material	Copper Alloy	Copper Alloy
Housing Material	Polyamide (PA), Nylon, Glass Filled	Polyamide (PA66), Nylon 6/6, Glass Filled
RoHS Status	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.90.4000	8536.90.4000

Engineering Selection Recommendations

The Weidmüller 2444090000 is the direct active equivalent for the obsolete 1971610000. Both components share identical electrical ratings, mechanical dimensions, and functional specifications within the Omnimate SC series. The substitute part maintains full compatibility across all critical parameters: 4-position configuration, 3.81mm pitch, 17.5A IEC current capacity, 320V IEC voltage rating, and identical wire gauge acceptance (16-28 AWG).

Both parts carry RoHS compliance and UL94 V-0 flammability certification, ensuring regulatory alignment for industrial applications. The housing material specification differs slightly (PA vs. PA66), but both are glass-filled polyamide formulations meeting the same performance and environmental standards.

For new procurement, system redesigns, or replacement applications, the 2444090000 is the appropriate selection due to its active product status and guaranteed long-term availability.

Frequently Asked Questions (FAQ)

Q: Can 2444090000 directly replace 1971610000 in existing assemblies?

A: Yes. Both components are functionally equivalent across all critical parameters: connector type, position count, pitch, electrical ratings, wire gauge compatibility, and termination method. Physical dimensions and mating characteristics are identical.

Q: What is the primary reason for substitution?

A: The 1971610000 is classified as obsolete, while 2444090000 is an active product. Substitution ensures continued procurement availability and supply chain reliability.

Q: Are there differences in housing material between these parts?

A: The main part specifies polyamide (PA) while the substitute specifies polyamide (PA66). Both are glass-filled nylon formulations with identical UL94 V-0 flammability ratings and operating temperature ranges (-50°C ~ 120°C). Material performance is equivalent for this application.

Q: Do both parts support the same wire gauges?

A: Yes. Both accept 16-28 AWG (0.2-1.5mm²) wire gauges with identical screw termination specifications (M2 screw, 0.2-0.25 Nm torque, 7mm wire strip length).

Q: Are electrical specifications identical?

A: Yes. Both parts carry identical IEC ratings (17.5A, 320V) and UL ratings (10A, 300V), with matching contact materials (copper alloy) and mating finishes (tin).

Q: What is the packaging difference?

A: The main part lists packaging as unspecified, while the substitute is packaged in bulk. This does not affect functional compatibility.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both are RoHS compliant with MSL rating of 1 (unlimited moisture sensitivity). Both carry identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

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