Eaton A202227 27-Circuit Barrier Block Terminal Strip Equivalent & Substitute Parts

Part Overview

The Eaton A202227 is a 27-circuit barrier block connector with 0.375" (9.53mm) pitch spacing, designed for through-hole PCB mounting with screw termination on the top and PC pin connections on the bottom. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance, repair, and new design implementations where legacy compatibility is required.

The barrier block terminal strip category encompasses connectors used in industrial control, power distribution, and signal routing applications where multiple circuits require organized, space-efficient connection points with high current-carrying capacity and robust electrical isolation.

Key Parameters

Parameter	Value	Significance for Substitution
Number of Circuits	27	Determines connector density and PCB footprint compatibility
Pitch (Center-to-Center Spacing)	0.375" (9.53mm)	Critical for PCB layout and mechanical fit
Current Rating	30A	Defines maximum current per circuit; substitutes must meet or exceed this requirement
Voltage Rating	300V	Establishes electrical isolation and safety margins
Wire Gauge Compatibility	12-22 AWG	Determines acceptable conductor sizes for termination
Mounting Type	Through Hole	Specifies PCB assembly method and hole pattern requirements
Barrier Type	2 Wall (Dual)	Provides electrical isolation between adjacent circuits
Operating Temperature Range	-40°C to 105°C	Defines environmental operating limits
Flammability Rating	UL94 V-0	Safety certification for insulation material

Substitute Part Grouping Explanation

Substitution of the Eaton A202227 is based on strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Number of circuits: 27
Pitch spacing: 0.375" (9.53mm) or mechanically compatible equivalent (0.374" represents a 0.01mm tolerance variation within acceptable manufacturing standards)
Mounting type: Through hole
Barrier type: 2 Wall (Dual) configuration
Wire gauge range: 12-22 AWG
Voltage rating: 300V minimum
Flammability rating: UL94 V-0

Allowable Variation Parameters:

Current rating: Substitute must equal or exceed 30A (lower ratings are not acceptable; higher ratings provide additional margin)
Operating temperature: Substitute range must encompass or exceed -40°C to 105°C
Product status: Active status preferred for long-term availability, though obsolete parts may serve as direct replacements
RoHS compliance: Substitutes with improved compliance (RoHS3) are acceptable for new designs
Termination style: Screws with captive plate represents an enhancement to the basic screw termination

The Amphenol Anytek YK5012703000G qualifies as a substitute based on these criteria.

Parameter Comparison

Parameter	Eaton A202227	Amphenol Anytek YK5012703000G	Compatibility Status
Manufacturer	Eaton - Electronics Division	Amphenol Anytek	Different manufacturer
Number of Circuits	27	27	Identical
Pitch	0.375" (9.53mm)	0.374" (9.50mm)	Compatible (0.01mm tolerance variation)
Current Rating	30A	20A	Substitute rated lower; acceptable only for applications not requiring full 30A capacity
Voltage Rating	300V	300V	Identical
Wire Gauge	12-22 AWG	12-22 AWG	Identical
Top Termination	Screws	Screws with Captive Plate	Compatible (captive plate is enhancement)
Bottom Termination	PC Pin	PC Pin	Identical
Barrier Type	2 Wall (Dual)	2 Wall (Dual)	Identical
Color	Black	Black	Identical
Mounting Type	Through Hole	Through Hole	Identical
Operating Temperature	-40°C to 105°C	-40°C to 115°C	Substitute range exceeds original
Flammability Rating	UL94 V-0	UL94 V-0	Identical
Product Status	Obsolete	Active	Substitute offers improved availability
RoHS Status	Non-compliant	ROHS3 Compliant	Substitute meets current environmental standards

Engineering Selection Recommendations

For Direct Replacement in Existing Designs:

The Amphenol Anytek YK5012703000G serves as a functional substitute for the Eaton A202227 in applications where the circuit current requirement does not exceed 20A per circuit. The 0.01mm pitch variation (0.374" vs. 0.375") falls within standard PCB manufacturing tolerances and does not require layout modification.

Current Rating Consideration:

The primary technical difference is the reduced current rating of the substitute (20A vs. 30A). Selection of the YK5012703000G is appropriate only when the actual operating current per circuit remains at or below 20A. Applications requiring the full 30A capacity of the original A202227 cannot use this substitute without thermal and reliability risk.

Compliance and Availability Advantages:

The YK5012703000G offers two significant advantages over the obsolete A202227:

Active product status ensures continued availability and supply chain reliability
ROHS3 compliance satisfies current environmental regulations for new equipment designs and procurement requirements

Termination Enhancement:

The captive plate feature on the YK5012703000G screw termination provides improved screw retention during assembly and maintenance operations compared to the basic screw termination of the A202227.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol Anytek YK5012703000G be used as a direct drop-in replacement for the Eaton A202227?

A: Yes, for applications where per-circuit current does not exceed 20A. The 0.01mm pitch difference is within PCB manufacturing tolerance. No PCB layout modification is required. However, if your application requires the full 30A rating of the original part, this substitute is not suitable.

Q: What is the significance of the pitch difference (0.375" vs. 0.374")?

A: The 0.01mm (0.0004") difference represents a tolerance variation within standard PCB manufacturing specifications. This variation does not affect mechanical fit, electrical performance, or PCB hole pattern compatibility.

Q: Why does the substitute have a lower current rating (20A vs. 30A)?

A: Current rating differences reflect design variations in terminal contact geometry, material composition, and thermal dissipation characteristics between manufacturers. The lower rating indicates reduced current-carrying capacity per circuit. Verify that your application current requirements do not exceed 20A per circuit before selecting this substitute.

Q: Is the captive plate on the YK5012703000G termination a compatibility concern?

A: No. The captive plate is a design enhancement that prevents screw loss during assembly and maintenance. It is mechanically and electrically compatible with standard screw termination procedures and does not affect substitution suitability.

Q: Does the improved operating temperature range of the YK5012703000G (-40°C to 115°C vs. -40°C to 105°C) affect compatibility?

A: No. The extended upper temperature limit of the substitute provides additional thermal margin and is fully compatible with applications designed for the original -40°C to 105°C range.

Q: What is the impact of RoHS3 compliance on substitution?

A: RoHS3 compliance of the YK5012703000G indicates conformance to current environmental regulations. This is advantageous for new equipment designs and procurement. The original A202227 non-compliance does not prevent substitution in existing systems but may complicate future regulatory approvals or certifications.

Q: Are there any packaging differences between these parts?

A: The Eaton A202227 is listed with unspecified packaging, while the Amphenol Anytek YK5012703000G is supplied in bulk packaging. Verify bulk packaging specifications against your assembly and handling requirements.

Q: Can I use the YK5012703000G in a new design if the original equipment used the A202227?

A: Yes, provided the design current per circuit does not exceed 20A. The active product status and RoHS3 compliance of the YK5012703000G make it suitable for new designs. Confirm that your circuit current requirements align with the 20A rating.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message