HG2-AC48V Equivalent & Substitute Parts

Part Overview

The HG2-AC48V is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 48VAC coil and 20A contact rating. This socketable relay is designed for industrial control applications requiring reliable switching at 250VAC nominal switching voltage. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

HG2-AC48V

Panasonic Electric WorksIn Stock: 964HG2-AC48V Datasheet

Current PartRFQ

LY2 AC48

Omron Automation and SafetyIn Stock: 1017LY2 AC48 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HG2-AC48V is determined by the following critical parameters that must remain consistent:

• 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)
• Must Operate Voltage: 38.4 VAC (exact match required)
• Must Release Voltage: 14.4 VAC (exact match required)

The LY2 AC48 from Omron Automation and Safety meets these core substitution criteria. However, the contact rating differs: the HG2-AC48V is rated for 20A, while the LY2 AC48 is rated for 10A. This difference must be evaluated against the specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The LY2 AC48 is the identified substitute for the obsolete HG2-AC48V based on matching coil voltage, contact form, mounting configuration, and voltage thresholds. The LY2 AC48 is currently in active production status with RoHS compliance certification, ensuring long-term availability and regulatory alignment.

Selection of the LY2 AC48 requires verification that the 10A contact rating is sufficient for the application, as this represents a reduction from the original 20A specification. The lower coil current (23 mA versus 75 mA) and extended operating temperature range (-25°C ~ 55°C) of the LY2 AC48 may provide operational advantages in certain installations. The slightly longer switching times (25 ms versus 15 ms) must be evaluated against application timing requirements.

Frequently Asked Questions (FAQ)

Q: Can the LY2 AC48 directly replace the HG2-AC48V in all applications?

A: The LY2 AC48 matches the critical electrical parameters (coil voltage, contact form, voltage thresholds) and mounting configuration. However, the contact rating is reduced from 20A to 10A. Direct replacement is only appropriate if the application current does not exceed 10A.

Q: What is the significance of the different contact ratings?

A: The HG2-AC48V is rated for 20A switching current, while the LY2 AC48 is rated for 10A. The contact rating defines the maximum continuous current the relay contacts can safely switch. Exceeding this rating may result in contact degradation or failure.

Q: Are the switching times compatible?

A: The HG2-AC48V operates and releases in 15 ms, while the LY2 AC48 requires 25 ms for both operations. Applications