OSTVM045551 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The OSTVM045551 is a 4-position terminal block plug manufactured by On Shore Technology Inc., featuring female sockets with 0.200" (5.08mm) pitch spacing and 180° free-hanging in-line mounting. This component is currently active in production and maintains 970 units in new original stock inventory.

The OSTVM045551 operates at 20 A (UL) and 300 V (UL) with screw-pressure clip termination, suitable for applications requiring reliable wire connection in industrial control and automation systems. Wire gauge compatibility spans 12-22 AWG with M2.5 screw terminals rated at 0.4 Nm torque.

Substitute parts become necessary when the original component reaches end-of-life status, when inventory constraints occur, or when design modifications require alternative mechanical or electrical specifications within acceptable tolerance ranges.

Substiute Parts

OSTVM045551

On Shore Technology Inc.In Stock: 1006OSTVM045551 Datasheet

Current PartRFQ

1557560000

WeidmüllerIn Stock: 10941557560000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSTVM045551 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of positions: 4
• Pitch spacing: 0.200" (5.08mm)
• Type: Plug with female sockets
• Mounting configuration: Free hanging (in-line)
• Termination method: Screw-based connection
• Voltage rating: Minimum 300 V (UL)
• Current rating: Minimum 20 A (UL)
• Wire gauge support: Minimum 12-22 AWG compatibility
• Operating temperature range: Must encompass or exceed -30°C ~ 105°C
• Flammability rating: UL94 V-0
• Regulatory compliance: RoHS and REACH status alignment

The substitute part 1557560000 (Weidmüller Omnimate BL series) shares the core functional parameters of 4-position, 5.08mm pitch, female socket plug configuration with free-hanging in-line mounting. However, specific parameter variations exist that require engineering evaluation during component selection.

Parameter Comparison

Engineering Selection Recommendations

OSTVM045551 (Primary Selection): The OSTVM045551 maintains active production status with 970 units in new original stock inventory. This component is ROHS3 compliant and carries current UL certification. The 20 A (UL) current rating and 300 V (UL) voltage specification support standard industrial control applications. Selection of the OSTVM045551 is recommended for new designs and ongoing production where component availability and regulatory compliance are primary considerations.

1557560000 (Substitute Consideration): The Weidmüller 1557560000 carries obsolete product status, indicating discontinued manufacturing and limited future availability. The UL current rating of 10 A represents a 50% reduction compared to the OSTVM045551, making this substitute unsuitable for applications requiring the full 20 A capacity. The 270° plug wire entry orientation differs from the 180° configuration of the primary part, requiring mechanical design verification for connector alignment and panel mounting compatibility. The increased insulation height (1.059" versus 0.587") may create spatial constraints in compact enclosure designs. The substitute part is RoHS compliant but does not carry ROHS3 certification. Selection of the 1557560000 is limited to legacy system maintenance where the reduced current rating and mechanical differences are acceptable within the application constraints.

Frequently Asked Questions (FAQ)

Q: Can the 1557560000 directly replace the OSTVM045551 in existing applications?

A: Direct replacement requires verification of three critical parameters: (1) Current requirement must not exceed 10 A (UL rating of the substitute versus 20 A of the original); (2) Mechanical orientation must accommodate the 270° wire entry angle versus the 180° configuration of the OSTVM045551; (3) Enclosure space must accommodate the increased insulation height of 1.059" (26.90 mm) compared to 0.587" (14.91 mm) of the original part.

Q: What are the key differences in termination methodology between these parts?

A: The OSTVM045551 uses screw-pressure clip termination, while the 1557560000 employs screw-clamping yoke with tension sleeve. Both utilize M2.5 screws with comparable torque specifications (0.4 Nm versus 0.4-0.5 Nm range). The clamping yoke design of the substitute may provide different wire retention characteristics and require adjusted assembly procedures.

Q: Are there wire gauge compatibility considerations for substitution?

A: The OSTVM045551 supports 12-22 AWG wire gauge. The 1557560000 extends compatibility to 12-26 AWG, providing broader wire size accommodation. However, the substitute's reduced current rating of 10 A (UL) may limit practical application of larger gauge conductors in high-current circuits.

Q: What is the significance of the product status difference?

A: The OSTVM045551 maintains active production status with current inventory availability. The 1557560000 is classified as obsolete, indicating discontinued manufacturing. Obsolete status restricts future procurement options and may result in supply chain constraints for long-term production requirements.

Q: How do the operating temperature ranges compare?

A: The OSTVM045551 operates across -30°C to 105°C. The 1557560000 extends the lower temperature limit to -50°C but reduces the upper limit to 100°C. Applications requiring operation above 100°C are incompatible with the substitute part.

Q: What regulatory compliance differences exist between these components?

A: Both parts carry UL94 V-0 flammability ratings and REACH unaffected status. The OSTVM045551 is ROHS3 compliant, while the 1557560000 is RoHS compliant. ROHS3 represents a more recent regulatory standard. Both components carry EAR99 ECCN classification and 8536.90.4000 HTSUS code.