LY2-AC24 Equivalent & Substitute Parts

Part Overview

The LY2-AC24 is a general purpose relay manufactured by Omron Automation and Safety, featuring a DPDT (2 Form C) contact configuration with a 24VAC coil. This socketable relay is designed for applications requiring 10A switching capacity at 250VAC or 125VDC maximum switching voltage. The part is currently active in production with 876 units in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified operating parameters. The K10P-11A15-24 from TE Connectivity Potter & Brumfield Relays represents a functionally compatible alternative with enhanced current rating and operating temperature range.

Substiute Parts

LY2-AC24

Omron Automation and SafetyIn Stock: 975LY2-AC24 Datasheet

Current PartRFQ

K10P-11A15-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 986K10P-11A15-24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The K10P-11A15-24 qualifies as a substitute based on the following critical parameters:

Matching Parameters:

• Coil voltage: 24VAC (identical)
• Contact form: DPDT (2 Form C) (identical)
• Mounting type: Socketable (identical)
• Termination style: Plug In compatible (K10P includes additional Quick Connect option)
• Coil type: Non Latching (identical)
• Relay type: General Purpose (identical)

Enhanced Parameters:

• Contact rating: 15A (exceeds 10A requirement)
• Operating temperature range: -45°C ~ 70°C (exceeds -25°C ~ 55°C range)
• Operate/Release time: 13ms/10ms (faster than 25ms/25ms)

Differing Parameters:

• Switching voltage: 120VAC max (lower than 250VAC/125VDC specification)
• Contact material: Silver Cadmium Oxide (different from Silver Alloy)
• RoHS status: Non-compliant (differs from compliant status)
• REACH status: Affected (differs from unaffected status)

Parameter Comparison

Engineering Selection Recommendations

LY2-AC24 Selection Criteria:

• Applications requiring RoHS compliance
• Systems operating at switching voltages up to 250VAC or 125VDC
• Designs where REACH unaffected status is mandatory
• Environments within -25°C to 55°C operating range
• Applications with 10A maximum current requirements

K10P-11A15-24 Selection Criteria:

• Applications where higher current capacity (15A) provides design margin
• Systems requiring extended operating temperature range (-45°C to 70°C)
• Designs benefiting from faster switching times (13ms operate, 10ms release)
• Applications where RoHS non-compliance and REACH affected status are acceptable
• Circuits operating at 120VAC maximum switching voltage

Critical Compatibility Consideration: The K10P-11A15-24 has a maximum switching voltage of 120VAC, which is significantly lower than the LY2-AC24 specification of 250VAC/125VDC. This parameter difference must be evaluated against actual circuit requirements before substitution.

Frequently Asked Questions (FAQ)

Q: Can the K10P-11A15-24 directly replace the LY2-AC24 in all applications?

A: Direct replacement is possible only when the application switching voltage does not exceed 120VAC. The LY2-AC24 supports higher switching voltages (250VAC, 125VDC), so applications utilizing this capability cannot use the K10P-11A15-24 as a substitute.

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

A: The LY2-AC24 uses Silver Alloy contacts while the K10P-11A15-24 uses Silver Cadmium Oxide (AgCdO). These materials have different electrical and mechanical wear characteristics. Contact material selection affects arc suppression, contact resistance, and longevity under specific load conditions.

Q: Does the higher current rating of the K10P-11A15-24 (15A vs 10A) make it universally superior?

A: Higher current rating provides design margin but does not make it universally superior. The LY2-AC24 maintains higher switching voltage capability and RoHS compliance. Selection depends on specific application requirements, not on single parameter comparison.

Q: Are there packaging differences between these relays?

A: Yes. The LY2-AC24 is supplied in Bulk packaging, while the K10P-11A15-24 is supplied in Tray packaging. Both are socketable with plug-in termination, though the K10P offers an additional Quick Connect termination option.

Q: What does RoHS non-compliance mean for the K10P-11A15-24?

A: RoHS non-compliance indicates the K10P-11A15-24 may contain restricted substances such as lead, mercury, cadmium, or hexavalent chromium. Applications subject to RoHS regulations (primarily in EU markets) cannot use this part. The LY2-AC24, being RoHS compliant, is suitable for regulated markets.

Q: How do the operating voltage thresholds differ?

A: The LY2-AC24 must operate at 19.2VAC minimum and release at 7.2VAC maximum. The K10P-11A15-24 must operate at 20.4VAC minimum but releases at only 2.4VAC maximum. This means the K10P requires slightly higher voltage to activate but releases more readily when voltage drops.