HL1-HTM-AC24V Equivalent & Substitute Parts

Part Overview

The HL1-HTM-AC24V is a general purpose relay manufactured by Panasonic Electric Works, featuring a Single Pole Double Throw (SPDT) contact configuration with a 24VAC coil and 15A contact rating. This relay is designed for chassis mount applications with quick connect termination. The product is currently obsolete, making identification of equivalent substitute parts essential for system maintenance, repair, and redesign applications where continued availability is required.

Substiute Parts

HL1-HTM-AC24V

Panasonic Electric WorksIn Stock: 858HL1-HTM-AC24V Datasheet

Current PartRFQ

LY1F-AC24

Omron Automation and SafetyIn Stock: 1115LY1F-AC24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HL1-HTM-AC24V is determined by the following critical parameters that must match or exceed the original specification:

Core Functional Requirements:

• Contact configuration: SPDT (1 Form C)
• Coil voltage: 24VAC
• Contact current rating: 15 A minimum
• Switching voltage capability: 125VAC minimum
• Coil type: Non-latching
• Contact material: Silver alloy

Operational Requirements:

• Must operate voltage: 19.2 VAC
• Must release voltage: 7.2 VAC
• Mounting compatibility: Chassis mount capable
• Operating temperature range: Must encompass or exceed -50°C ~ 70°C

The LY1F-AC24 from Omron Automation and Safety meets these core functional requirements and is classified as an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The LY1F-AC24 is a direct functional equivalent for the obsolete HL1-HTM-AC24V based on matching core electrical parameters: identical SPDT contact configuration, 24VAC coil voltage, 15A contact rating, and equivalent operating voltage thresholds. The Omron substitute provides enhanced switching voltage capability (250VAC/125VDC maximum versus 125VAC nominal) and maintains silver alloy contact material.

The LY1F-AC24 is an active product with current manufacturing support and RoHS compliance certification, ensuring long-term availability and regulatory alignment. The primary design consideration is termination style: the original HL1-HTM-AC24V uses quick connect 0.187" terminals, while the LY1F-AC24 uses plug-in termination. Mechanical integration requires adapter consideration or terminal reconfiguration based on application requirements.

Operating temperature range differs: the original supports -50°C ~ 70°C while the substitute supports -25°C ~ 55°C. Applications requiring operation below -25°C or above 55°C require alternative evaluation.

Frequently Asked Questions (FAQ)

Q: Can the LY1F-AC24 directly replace the HL1-HTM-AC24V without modification?

A: Electrical substitution is valid based on matching SPDT configuration, 24VAC coil voltage, 15A contact rating, and equivalent operating thresholds. Mechanical integration requires assessment of termination compatibility: the original uses quick connect 0.187" terminals while the substitute uses plug-in termination. Chassis mount capability is present in both designs.

Q: What are the critical parameters that define substitution eligibility?

A: Contact form (SPDT), coil voltage (24VAC), contact current rating (15A minimum), switching voltage capability (125VAC minimum), coil type (non-latching), and operating voltage thresholds (must operate 19.2VAC, must release 7.2VAC) are the primary substitution criteria.

Q: Does the LY1F-AC24 meet the original operating temperature range?

A: The LY1F-AC24 supports -25°C ~ 55°C, which is narrower than the original -50°C ~ 70°C range. Applications requiring operation at temperatures below -25°C or above 55°C require alternative component evaluation.

Q: What is the difference in switching speed between these relays?

A: The HL1-HTM-AC24V operates and releases in 10 ms. The LY1F-AC24 operates and releases in 25 ms. Applications with timing-critical switching requirements must account for this 15 ms difference.

Q: Are there packaging or inventory considerations?

A: The HL1-HTM-AC24V is obsolete with limited remaining inventory. The LY1F-AC24 is an active product with current manufacturing support and bulk packaging availability, ensuring reliable long-term sourcing for production applications.