EDZ1550/4 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The EDZ1550/4 is a 4-position terminal block plug manufactured by On Shore Technology Inc., designed for free-hanging (in-line) applications with 0.150" (3.81mm) pitch spacing. This component features female sockets with screw termination, rated for 300V UL and operating temperatures from -30°C to 105°C. The part is actively produced and ROHS3 compliant, with 963 units currently in stock.

Equivalent and substitute parts are identified when design requirements change, inventory constraints occur, or when alternative sourcing becomes necessary while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Key Parameters

Parameter	Value
Number of Positions	4
Pitch	0.150" (3.81mm)
Type	Plug, Female Sockets
Mounting Type	Free Hanging (In-Line)
Termination Style	Screw
Voltage - UL	300 V
Wire Gauge Range - AWG	16-28 AWG
Operating Temperature	-30°C ~ 105°C
Color	Green
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the EDZ1550/4 is determined by the following critical parameters that must align or exceed the main part specifications:

Mandatory Matching Parameters:

Number of positions: 4
Pitch spacing: 0.150" (3.81mm)
Type: Plug with female sockets
Mounting configuration: Free hanging (in-line)
Voltage rating: Minimum 300V UL
Termination method: Screw-based

Allowable Variation Parameters:

Wire gauge range: Substitute must accommodate the 16-28 AWG range or a subset thereof
Operating temperature: Substitute range must encompass or exceed -30°C to 105°C
Contact and housing materials: May differ if electrical performance is maintained
Torque specifications: May vary within industry-standard ranges for screw termination

Two substitute parts meet these criteria: OSTTJ0431530 (On Shore Technology Inc.) and 284507-4 (TE Connectivity AMP Connectors).

Parameter Comparison

Parameter	EDZ1550/4	OSTTJ0431530	284507-4
Manufacturer	On Shore Technology Inc.	On Shore Technology Inc.	TE Connectivity AMP Connectors
Number of Positions	4	4	4
Pitch	0.150" (3.81mm)	0.150" (3.81mm)	0.150" (3.81mm)
Type	Plug, Female Sockets	Plug, Female Sockets	Plug, Female Sockets
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination Style	Screw	Screw	Screw - Rising Cage Clamp
Voltage - UL	300 V	300 V	300 V
Wire Gauge - AWG	16-28 AWG	16-26 AWG	14-30 AWG
Wire Gauge - mm²	1.5mm²	1.5mm²	0.05-2mm²
Operating Temperature	-30°C ~ 105°C	-40°C ~ 115°C	-40°C ~ 110°C
Color	Green	Green	Green
Torque - Screw	0.4 Nm (3.5 Lb-In)	0.28 Nm (2.5 Lb-In)	0.31 Nm (2.7 Lb-In)
Contact Material	Copper Tin Alloy	Brass	Phosphor Bronze
Housing Material	Polyamide (PA), Nylon	Brass	Polyamide (PA66), Nylon 6/6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Inventory	963 Pcs	3012 Pcs	1774 Pcs

Engineering Selection Recommendations

EDZ1550/4 (Primary Part): Select when original design specifications are maintained and inventory availability is acceptable. ROHS3 compliant with MSL 1 rating. Suitable for standard applications within the specified temperature and voltage parameters.

OSTTJ0431530 (Direct Substitute - Same Manufacturer): This On Shore Technology Inc. part provides expanded operating temperature range (-40°C to 115°C) compared to the EDZ1550/4. Wire gauge accommodation is slightly narrower (16-26 AWG versus 16-28 AWG). Inventory availability is significantly higher at 3012 units. Both parts share identical pitch, position count, and voltage rating. ROHS3 compliant. Select when extended temperature performance is required or when leveraging higher inventory levels from the same manufacturer.

284507-4 (Cross-Manufacturer Substitute - TE Connectivity): This Buchanan series part from TE Connectivity AMP Connectors offers the widest wire gauge range (14-30 AWG) and includes rising cage clamp termination technology. Operating temperature range (-40°C to 110°C) exceeds the main part specification. Contact material is phosphor bronze with polyamide PA66 housing. Includes side stacking feature and UL94 V-0 flammability rating. REACH affected status differs from the main part. Select when broader wire gauge compatibility or enhanced termination security is required, or when TE Connectivity supply chain integration is preferred.

All three parts maintain 4-position, 3.81mm pitch configuration with 300V UL rating and free-hanging mounting, ensuring mechanical and electrical compatibility within the specified parameter envelope.

Frequently Asked Questions (FAQ)

Q: Can OSTTJ0431530 replace EDZ1550/4 in all applications?

A: OSTTJ0431530 is compatible for applications within the overlapping wire gauge range (16-26 AWG). The narrower upper limit of 26 AWG excludes 28 AWG wire applications. Both parts maintain identical pitch, position count, voltage rating, and mounting configuration. Extended temperature range of OSTTJ0431530 (-40°C to 115°C) provides additional operational margin beyond the EDZ1550/4 specification (-30°C to 105°C).

Q: What are the key differences between 284507-4 and the other two parts?

A: 284507-4 differs in termination technology (rising cage clamp versus standard screw), contact material (phosphor bronze versus copper tin alloy or brass), and housing material (PA66 versus standard polyamide). Wire gauge range is broader (14-30 AWG). Torque specification is lower (0.31 Nm versus 0.4 Nm). REACH status is affected, whereas the other parts are REACH unaffected. Pitch, position count, voltage rating, and mounting type remain identical.

Q: Are there wire gauge compatibility constraints when substituting?

A: Yes. The EDZ1550/4 accommodates 16-28 AWG. OSTTJ0431530 accommodates 16-26 AWG, excluding 28 AWG applications. 284507-4 accommodates 14-30 AWG, providing the broadest range. Verify wire gauge requirements before substitution to ensure the selected part supports the intended conductor sizes.

Q: Do operating temperature ranges affect substitution decisions?

A: Operating temperature ranges should be evaluated against application requirements. EDZ1550/4 operates -30°C to 105°C. Both OSTTJ0431530 and 284507-4 extend the lower limit to -40°C and upper limits to 115°C and 110°C respectively. Select based on actual environmental operating conditions; extended range parts provide additional margin but are not required if application temperatures remain within the main part specification.

Q: What is the significance of the different contact materials?

A: Contact materials differ: EDZ1550/4 uses copper tin alloy, OSTTJ0431530 uses brass, and 284507-4 uses phosphor bronze. All materials are suitable for screw termination applications at 300V. Material selection affects contact resistance, durability, and cost. Substitution is acceptable from an electrical standpoint; material differences do not compromise compatibility within the specified voltage and current parameters.

Q: How do torque specifications impact substitution?

A: Torque specifications vary: EDZ1550/4 requires 0.4 Nm, OSTTJ0431530 requires 0.28 Nm, and 284507-4 requires 0.31 Nm. These differences reflect termination mechanism design. Installation procedures must follow the specific part manufacturer's torque recommendations to ensure proper contact pressure and electrical performance. Substitution does not require torque adjustment if installation follows the selected part's documentation.

Q: Are all three parts ROHS3 compliant?

A: Yes. EDZ1550/4, OSTTJ0431530, and 284507-4 are all ROHS3 compliant. MSL rating is 1 (unlimited) for all parts, indicating no moisture sensitivity constraints during storage or handling.

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