Weidmüller 995040 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Weidmüller 995040 is a 21-position wire-to-board terminal block with 5.00mm pitch, designed for horizontal mounting through PCB holes. This component features side-entry interlocking configuration with screw-clamping wire termination, rated for 15A at 300V, and accommodates wire gauges from 12-26 AWG. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Positions	21
Pitch	0.197" (5.00mm)
Mating Orientation	Horizontal with Board
Mounting Type	Through Hole
Current Rating	15 A
Voltage Rating	300 V
Wire Gauge Range	12-26 AWG
Wire Termination	Screw - Clamping Yoke, Tension Sleeve
Features	Interlocking (Side)
Operating Temperature	-20°C ~ 100°C
Housing Material	Polyamide (PA66), Nylon 6/6
Contact Material	Copper Alloy - Tin Plated

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 995040 is determined by strict alignment of the following critical parameters:

Position count and pitch: Must be 21 positions at 0.197" (5.00mm) spacing
Mating orientation and mounting: Horizontal with board, through-hole PCB mounting
Electrical ratings: Minimum 15A current and 300V voltage capability
Wire termination compatibility: Screw-based clamping mechanisms
Interlocking configuration: Side-entry interlocking feature
Wire gauge accommodation: Support for 12-26 AWG minimum range

Both identified substitutes meet these core criteria. Variations in wire gauge range, current rating, temperature range, and termination mechanism type (clamping yoke vs. push-button clamp vs. rising cage clamp) are permitted within the allowed electrical and mechanical parameters for this product category.

Parameter Comparison

Parameter	Weidmüller 995040	TE Connectivity 2-1986711-1	Eaton EM258521V
Manufacturer	Weidmüller	TE Connectivity AMP Connectors	Eaton - Electronics Division
Positions	21	21	21
Pitch	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Mating Orientation	Horizontal with Board	Horizontal with Board	Horizontal with Board
Mounting Type	Through Hole	Through Hole	Through Hole
Current Rating	15 A	16 A	16 A
Voltage Rating	300 V	300 V	300 V
Wire Gauge Range	12-26 AWG	12-30 AWG	12-26 AWG
Wire Termination	Screw - Clamping Yoke, Tension Sleeve	Screwless - Push Button Clamp	Screw - Rising Cage Clamp
Features	Interlocking (Side)	Interlocking (Side)	Interlocking (Side)
Color	Black	Green	Green
Operating Temperature	-20°C ~ 100°C	-40°C ~ 110°C	-40°C ~ 105°C
Housing Material	Polyamide (PA66), Nylon 6/6	Polyamide (PA), Nylon	Thermoplastic
Contact Material	Copper Alloy - Tin Plated	Copper Alloy - Tin Plated	Brass - Tin Plated
Product Status	Obsolete	Active	Active
RoHS Status	Not applicable	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

TE Connectivity 2-1986711-1 is suitable for applications where screwless push-button termination is acceptable and extended temperature range (-40°C to 110°C) is beneficial. This part is active and ROHS3 compliant, supporting 12-30 AWG wire gauges. The screwless mechanism eliminates torque specification requirements but requires different installation procedures than the original screw-clamping design.

Eaton EM258521V maintains screw-based termination consistent with the original Weidmüller 995040, utilizing a rising cage clamp mechanism with M2.6 screw thread and 0.56 Nm torque specification. This part is active and supports the original 12-26 AWG wire gauge range. Operating temperature extends to -40°C to 105°C, providing improved low-temperature performance.

Both substitutes exceed the original 15A current rating at 16A and maintain 300V voltage compatibility. Selection between substitutes depends on termination mechanism preference and compliance requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2-1986711-1 be used as a direct replacement for the Weidmüller 995040?

A: The TE Connectivity part meets all critical electrical and mechanical parameters: 21 positions, 5.00mm pitch, horizontal through-hole mounting, 300V rating, and side-entry interlocking. However, the termination mechanism differs—it uses screwless push-button clamping instead of screw-clamping yoke. Installation procedures and tooling requirements will differ accordingly.

Q: What is the primary difference between the Eaton EM258521V and the original Weidmüller 995040?

A: Both parts use screw-based termination, but the Eaton employs a rising cage clamp with M2.6 thread and 0.56 Nm torque, compared to the Weidmüller's clamping yoke with M3 thread and 0.5-0.6 Nm torque. The Eaton part is active and offers extended temperature range (-40°C to 105°C versus -20°C to 100°C).

Q: Are there wire gauge compatibility considerations when substituting?

A: The TE Connectivity 2-1986711-1 accommodates 12-30 AWG, exceeding the original 12-26 AWG range. The Eaton EM258521V matches the original 12-26 AWG specification. Both are compatible with the original design intent for wire gauge accommodation.

Q: Which substitute is recommended for new designs?

A: Both substitutes are active products with current manufacturer support. The Eaton EM258521V maintains closer mechanical compatibility with screw-based termination. The TE Connectivity 2-1986711-1 offers screwless convenience and extended temperature performance. Selection should align with installation procedures and environmental requirements of the target application.

Q: What compliance differences exist between the substitutes?

A: The TE Connectivity 2-1986711-1 is ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). The Eaton EM258521V compliance status is not specified in available documentation. Both parts carry EAR99 ECCN classification and 8536.90.4000 HTSUS code, matching the original part.

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