HC2-H-AC48V-F Equivalent & Substitute Parts

Part Overview

The HC2-H-AC48V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 48VAC coil. This socketable relay is designed for applications requiring 7A contact rating at switching voltages up to 250VAC. The product is currently obsolete, making equivalent substitute parts necessary for system maintenance, repair, and legacy equipment support.

Substiute Parts

HC2-H-AC48V-F

Panasonic Electric WorksIn Stock: 807HC2-H-AC48V-F Datasheet

Current PartRFQ

LY2 AC48

Omron Automation and SafetyIn Stock: 1017LY2 AC48 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC2-H-AC48V-F is determined by the following critical parameters that must remain consistent or be compatible with the original application:

Primary Substitution Criteria:

• Coil voltage: 48VAC (exact match required)
• Contact form: DPDT (2 Form C) configuration (exact match required)
• Mounting type: Socketable with plug-in termination (exact match required)
• Coil type: Non-latching operation (exact match required)

Secondary Compatibility Parameters:

• Contact rating: Minimum 7A (equal or higher acceptable)
• Switching voltage: Minimum 250VAC (equal or higher acceptable)
• Must operate voltage: 38.4 VAC or lower (equal or lower acceptable)
• Must release voltage: 14.4 VAC or higher (equal or higher acceptable)
• Operating temperature range: Must encompass or match the original range

The LY2 AC48 from Omron Automation and Safety qualifies as a direct substitute based on these criteria. It maintains identical coil voltage, contact form, mounting configuration, and coil type while providing enhanced contact rating (10A vs. 7A) and equivalent switching voltage capability.

Parameter Comparison

Engineering Selection Recommendations

The LY2 AC48 is the qualified substitute for the HC2-H-AC48V-F based on the following engineering factors:

Functional Equivalence: Both relays maintain identical coil voltage (48VAC), contact configuration (DPDT), and operational characteristics (non-latching, socketable, plug-in termination). The substitute meets all primary substitution criteria.

Product Status Advantage: The LY2 AC48 is actively manufactured by Omron Automation and Safety, ensuring long-term availability and supply chain continuity compared to the obsolete HC2-H-AC48V-F.

Compliance and Certification: The LY2 AC48 carries RoHS compliance certification, meeting modern environmental and regulatory standards. Both parts share identical ECCN and HTSUS classifications.

Performance Considerations: The LY2 AC48 provides higher contact rating (10A vs. 7A), offering improved margin for applications at or near the original 7A specification. The substitute supports both 250VAC and 125VDC switching voltages, expanding application flexibility.

Application-Specific Verification: Applications requiring operation below -25°C or above 55°C must retain the HC2-H-AC48V-F or identify alternative solutions, as the LY2 AC48 operating temperature range is narrower. Applications with timing-critical functions must account for the 5 ms increase in operate and release times (20 ms to 25 ms).

Frequently Asked Questions (FAQ)

Q: Can the LY2 AC48 directly replace the HC2-H-AC48V-F in existing sockets?

A: Yes. Both relays feature identical socketable mounting with plug-in termination, enabling direct physical and electrical replacement without socket or wiring modifications.

Q: What is the significance of the higher 10A contact rating on the LY2 AC48?

A: The substitute's 10A rating provides additional current-carrying capacity beyond the original 7A specification. This is acceptable for substitution purposes, as it maintains or exceeds the original capability. Applications operating at or below 7A will function identically.

Q: Are there any timing differences between these relays?

A: The LY2 AC48 has operate and release times of 25 ms compared to the HC2-H-AC48V-F at 20 ms. This 5 ms difference is negligible for most general-purpose relay applications but should be verified for time-critical control circuits or fast-switching requirements.

Q: Does the narrower operating temperature range of the LY2 AC48 affect substitution?

A: The LY2 AC48 operates from -25°C to 55°C, compared to the original -50°C to 70°C range. Substitution is valid only for applications operating within the -25°C to 55°C window. Applications requiring extended temperature operation must retain the HC2-H-AC48V-F or identify alternative solutions.

Q: What is the coil current difference between these relays?

A: The LY2 AC48 draws 23 mA compared to the HC2-H-AC48V-F at 25 mA. This 2 mA reduction represents approximately 8% lower power consumption and may provide minor benefits in power-limited applications.

Q: Are both relays compliant with environmental regulations?

A: Both relays use cadmium-free silver alloy contacts. The LY2 AC48 carries explicit RoHS compliance certification. Both share identical ECCN (EAR99) and HTSUS (8536.41.00xx) classifications, confirming regulatory alignment.

Q: What switching voltage capabilities does each relay support?

A: The HC2-H-AC48V-F supports 250VAC maximum. The LY2 AC48 supports both 250VAC and 125VDC, providing expanded application flexibility for DC switching applications.