Weidmüller 1594510000 Terminal Block: Equivalent & Substitute Parts

Part Overview

The Weidmüller 1594510000 is a 3-position wire-to-board terminal block with 5mm pitch, designed for horizontal PCB mounting through-hole applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, repair, and new design implementations where legacy compatibility is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	1594510000
Manufacturer	Weidmüller
Series	Omnimate LP
Category	Terminal Blocks
Positions Per Level	3
Pitch	0.197" (5.00mm)
Mating Orientation	Horizontal with Board
Mounting Type	Through Hole
Current Rating	20 A
Voltage Rating	300 V
Wire Gauge	12-26 AWG
Wire Termination	Screw - Clamping Yoke, Tension Sleeve
Operating Temperature	-50°C ~ 100°C
Housing Material	Polyamide (PA), Nylon
Contact Material - Plating	Copper Alloy - Tin Plated
Screw Thread	M3
Torque - Screw	0.5-0.6 Nm (4.4-5.3 Lb-In)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 1594510000 is determined by strict alignment of the following critical parameters:

Pitch and Position Count: 5mm (0.197") pitch with 3 positions per level
Mounting Configuration: Through-hole, horizontal orientation with PCB
Electrical Ratings: Minimum 300 V voltage rating; current rating of 17.5 A or higher
Wire Gauge Compatibility: Support for 12-26 AWG minimum
Termination Method: Screw-based clamping mechanism
Mechanical Interface: M3 screw thread; side interlocking feature

The identified substitute parts meet these core criteria while maintaining functional equivalence for PCB-mounted wire-to-board connections in the specified voltage and current envelope.

Parameter Comparison

Parameter	Weidmüller 1594510000	TE Connectivity 796683-3	Eaton EM258503V
Positions Per Level	3	3	3
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	20 A	17.5 A	16 A
Voltage Rating	300 V	300 V	300 V
Wire Gauge	12-26 AWG	12-30 AWG	12-26 AWG
Wire Termination	Screw - Clamping Yoke, Tension Sleeve	Screw - Rising Cage Clamp	Screw - Rising Cage Clamp
Screw Thread	M3	M3	M3
Operating Temperature	-50°C ~ 100°C	Not Specified	-40°C ~ 105°C
Housing Material	Polyamide (PA), Nylon	Polyamide (PA66), Nylon 6/6	Thermoplastic
Contact Material - Plating	Copper Alloy - Tin Plated	Brass - Tin Plated	Brass - Tin Plated
Torque - Screw	0.5-0.6 Nm (4.4-5.3 Lb-In)	0.79 Nm (7.0 Lb-In)	0.79 Nm (7.0 Lb-In)
Features	Interlocking (Side)	Interlocking (Side)	Interlocking (Side)

Engineering Selection Recommendations

TE Connectivity 796683-3 is an active product with ROHS3 compliance and MSL 1 rating, providing the highest current capacity (17.5 A) among available substitutes. This part is suitable for applications where component availability and regulatory compliance are primary considerations.

Eaton EM258503V is an active product with ROHS3 compliance and an extended operating temperature range (-40°C ~ 105°C), offering broader thermal performance than the original Weidmüller component. This substitute is appropriate for applications requiring enhanced temperature stability.

Both substitute parts maintain the critical 5mm pitch, 3-position configuration, 300 V voltage rating, M3 screw interface, and side interlocking feature required for direct functional replacement. Current ratings of 16-17.5 A are within acceptable operating margins for applications originally designed for the 20 A Weidmüller component, provided system load analysis confirms compatibility.

Frequently Asked Questions (FAQ)

Q: Can TE Connectivity 796683-3 and Eaton EM258503V be used interchangeably with the Weidmüller 1594510000?

A: Both parts share identical pitch (5mm), position count (3), voltage rating (300 V), mounting type (through-hole), and screw interface (M3). Functional substitution is valid provided the application current requirement does not exceed 16 A (the lower rating among substitutes). Verify wire gauge compatibility with your specific application.

Q: What is the impact of different wire termination methods?

A: The Weidmüller uses a clamping yoke with tension sleeve, while both substitutes employ rising cage clamp termination. Both methods provide screw-based wire retention with M3 threads. Installation procedures may differ; consult manufacturer documentation for torque specifications and assembly requirements.

Q: Are there temperature considerations when substituting?

A: The Weidmüller operates from -50°C to 100°C. The Eaton EM258503V extends to -40°C to 105°C, providing broader coverage. The TE Connectivity 796683-3 does not specify operating temperature limits. For applications outside the -40°C to 100°C range, verify thermal performance with the selected substitute.

Q: What compliance certifications apply to these substitutes?

A: Both TE Connectivity 796683-3 and Eaton EM258503V are ROHS3 compliant. The Eaton part carries REACH Unaffected status; TE Connectivity status is vendor-undefined. All three parts share EAR99 ECCN and 8536.90.4000 HTSUS classification.

Q: How do current ratings affect system design?

A: The Weidmüller 1594510000 is rated for 20 A; substitutes are rated 16-17.5 A. If your application operates at or near 20 A, verify that the lower substitute rating remains acceptable under worst-case load conditions. Current derating due to temperature or wire gauge may be required.

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