HR2S-301N Safety Relay Equivalent & Substitute Parts

Part Overview

The HR2S-301N is a safety relay manufactured by IDEC, classified as a 4PST (4-pole, single-throw) safety relay with 5A contact rating and 24VDC coil voltage. This component is designed for DIN Rail mounting with screw terminal connections and operates across a temperature range of -10°C to 55°C. The HR2S-301N is currently listed as obsolete, making identification of functionally equivalent active alternatives essential for system maintenance, repair, and new design implementations where this relay specification is required.

Substiute Parts

HR2S-301N

IDECIn Stock: 846HR2S-301N Datasheet

Current PartRFQ

HR6S-AF1P

IDECIn Stock: 1102HR6S-AF1P Datasheet

SimilarRFQ

HR6S-AK1P

IDECIn Stock: 900HR6S-AK1P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HR2S-301N is determined by the following critical parameters:

• Mounting Type: DIN Rail compatibility is mandatory for direct mechanical replacement
• Coil Voltage: 24VDC operation is required for circuit compatibility
• Termination Style: Screw Terminal connection must be maintained
• Contact Form & Rating: The relay must support the required switching configuration and current capacity
• Switching Voltage: Maximum voltage ratings must meet or exceed application requirements
• Manufacturer Compliance: RoHS3 compliance and EAR99 classification must be maintained

The HR6S series relays from IDEC meet these substitution criteria. Both HR6S-AK1P and HR6S-AF1P are active products with DIN Rail mounting, 24VAC/DC coil voltage compatibility, screw terminal termination, and equivalent compliance certifications. The HR6S series represents the active product line replacement for the obsolete HR2S-301N.

Parameter Comparison

Engineering Selection Recommendations

HR6S-AK1P is the primary substitute for HR2S-301N applications requiring a 4-pole configuration with mixed contact forms (2 Form A, 1 Form B). This part maintains active product status, ROHS3 compliance, and 24VAC/DC coil voltage flexibility. The 6A contact rating exceeds the original 5A specification, providing margin for application requirements. The 3PST-2NO/1NC contact form differs from the original 4PST-3NO/1NC configuration; circuit redesign may be necessary if all four poles are required.

HR6S-AF1P is suitable for applications requiring 3-pole normally-open (3PST-NO) contact configuration. This substitute provides active product status and ROHS3 compliance. Selection of this part is appropriate only when the application circuit can operate with three normally-open contacts without Form B (normally-closed) functionality.

Both substitutes are manufactured by IDEC, maintain DIN Rail mounting compatibility, screw terminal termination, and equivalent regulatory compliance. The transition from the obsolete HR2S series to the active HR6S series ensures long-term component availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can HR6S-AK1P directly replace HR2S-301N in all applications?

A: HR6S-AK1P provides mechanical and electrical compatibility for DIN Rail mounting, 24VDC coil operation, and screw terminal connections. However, the contact form differs: HR6S-AK1P provides 3PST-2NO/1NC (2 Form A, 1 Form B) versus the original 4PST-3NO/1NC (3 Form A, 1 Form B). Applications requiring all four poles must be redesigned or an alternative solution identified.

Q: What is the difference between HR6S-AK1P and HR6S-AF1P?

A: HR6S-AK1P provides 3PST-2NO/1NC contact configuration (2 normally-open, 1 normally-closed), while HR6S-AF1P provides 3PST-NO contact configuration (3 normally-open). Selection depends on whether normally-closed contacts are required in the application circuit.

Q: Are both HR6S substitutes compatible with 24VDC coil voltage?

A: Yes. Both HR6S-AK1P and HR6S-AF1P accept 24VAC/DC coil voltage, providing compatibility with 24VDC circuits. The dual voltage rating offers flexibility for applications using either AC or DC supply.

Q: Do the HR6S substitutes maintain the same current rating as HR2S-301N?

A: No. HR2S-301N is rated for 5A contact current, while both HR6S-AK1P and HR6S-AF1P are rated for 6A. The higher rating provides additional capacity margin and does not create compatibility issues for applications designed for 5A operation.

Q: Are compliance certifications maintained with HR6S substitutes?

A: Yes. Both HR6S-AK1P and HR6S-AF1P maintain ROHS3 compliance and EAR99 classification, matching the regulatory status of the original HR2S-301N.

Q: What packaging is available for HR6S substitutes?

A: Both HR6S-AK1P and HR6S-AF1P are supplied in Bulk packaging, consistent with industrial relay distribution standards.