PSU1-WH Equivalent & Substitute Parts Reference

Part Overview

The PSU1-WH is a 1-circuit barrier block connector manufactured by Eaton - Bussmann Electrical Division, part of the Magnum® PSU series. This component is rated for 45A at 600V and features a 3-wall tri-barrier design with side stacking capability. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance and system continuity. Barrier block connectors of this type are used in industrial control and power distribution applications where reliable terminal connections and electrical isolation are required.

Substiute Parts

PSU1-WH

Eaton - Bussmann Electrical DivisionIn Stock: 770PSU1-WH Datasheet

Current PartRFQ

PLU1-WH

Eaton - Bussmann Electrical DivisionIn Stock: 879PLU1-WH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PSU1-WH is determined by the following critical parameters:

• Electrical Compatibility: Voltage rating (600V minimum), current rating (45A minimum), and termination method (screw-based)
• Mechanical Compatibility: Single circuit, two wire entries, barrier block type, side stacking capability, and mounting on channel/DIN rail/track systems
• Physical Compatibility: White color, thermoplastic insulation, and 2-row raised staggered configuration
• Regulatory Compliance: UL94 V-2 flammability rating and equivalent safety certifications

The PLU1-WH meets these substitution criteria while offering enhanced current capacity (70A) and an enclosed barrier design, making it suitable for applications previously served by the obsolete PSU1-WH.

Parameter Comparison

Engineering Selection Recommendations

The PLU1-WH is the primary substitute for the obsolete PSU1-WH. Both components are manufactured by Eaton - Bussmann Electrical Division and share identical electrical ratings (600V), mechanical configuration (1 circuit, 2 wire entries, 2-row raised staggered design), and regulatory compliance (UL94 V-2). The PLU1-WH is currently in active production status, ensuring availability and supply chain continuity.

The PLU1-WH provides a higher current rating (70A versus 45A), which represents an enhancement over the original specification and does not create compatibility issues in applications designed for the PSU1-WH. The enclosed barrier design of the PLU1-WH offers improved electrical isolation compared to the 3-wall tri-barrier design of the PSU1-WH. Both components support identical mounting configurations (channel, DIN rail, track) and operate within the same temperature range (105°C).

The PLU1-WH is RoHS compliant, meeting current environmental and regulatory standards. Selection of the PLU1-WH eliminates obsolescence risk while maintaining full functional and mechanical compatibility with existing installations.

Frequently Asked Questions (FAQ)

Q: Can the PLU1-WH directly replace the PSU1-WH in existing applications?

A: Yes. Both components share identical circuit count (1), wire entry configuration (2), voltage rating (600V), termination method (screws), mounting type (channel/DIN rail/track), and operating temperature (105°C). The PLU1-WH's higher current rating (70A) and enclosed barrier design do not create compatibility issues.

Q: What is the difference between the 3-wall tri-barrier and enclosed barrier designs?

A: Both designs provide electrical isolation between circuits. The 3-wall tri-barrier design of the PSU1-WH uses three walls for separation, while the enclosed barrier design of the PLU1-WH provides complete enclosure. Both meet UL94 V-2 flammability requirements.

Q: Why is the PLU1-WH rated for higher current (70A) than the PSU1-WH (45A)?

A: The PLU1-WH represents a later design iteration within the Magnum® product family with enhanced current capacity. This higher rating does not affect compatibility with applications originally specified for 45A operation.

Q: Are there packaging differences between PSU1-WH and PLU1-WH?

A: The PSU1-WH is packaged in standard format, while the PLU1-WH is supplied in bulk packaging. Both are suitable for industrial applications and do not affect electrical or mechanical performance.

Q: Is the PLU1-WH RoHS compliant?

A: Yes. The PLU1-WH is RoHS compliant, meeting current environmental regulations. The PSU1-WH, as an obsolete product, does not carry this certification.