SR120MP01 Equivalent & Substitute Parts

Part Overview

The SR120MP01 is a safety relay manufactured by Omron Automation and Safety, designed for DIN Rail mounting applications. This 3PST-NO (3 Form A) relay operates at 24VAC/DC with a contact rating of 1.25A and includes a lighted indicator feature. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

SR120MP01

Omron Automation and SafetyIn Stock: 919SR120MP01 Datasheet

Current PartRFQ

G9SA-301 AC/DC24

Omron Automation and SafetyIn Stock: 1502G9SA-301 AC/DC24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The G9SA-301 AC/DC24 qualifies as a substitute for the SR120MP01 based on the following critical parameters:

Matching Parameters:

• Coil Voltage: Both operate at 24VAC/DC
• Contact Form: Both provide 3PST-NO (3 Form A) configuration
• Mounting Type: Both mount on DIN Rail
• Termination Style: Both use Screw Terminal connections
• Moisture Sensitivity Level: Both rated MSL 1 (Unlimited)
• Manufacturer: Both manufactured by Omron Automation and Safety

Parameter Differences:

• Contact Rating: G9SA-301 AC/DC24 provides 5A versus SR120MP01's 1.25A (higher capacity)
• Switching Voltage: G9SA-301 AC/DC24 rated 250VAC, 30VDC versus SR120MP01's 24VDC (broader voltage range)
• Operating Temperature: G9SA-301 AC/DC24 operates -25°C ~ 55°C versus SR120MP01's -10°C ~ 55°C (extended low-temperature range)
• Product Status: G9SA-301 AC/DC24 is Active; SR120MP01 is Obsolete
• RoHS Status: G9SA-301 AC/DC24 is ROHS3 Compliant

Parameter Comparison

Engineering Selection Recommendations

The G9SA-301 AC/DC24 is the designated substitute for the obsolete SR120MP01. Selection is based on:

• Functional Compatibility: Identical coil voltage (24VAC/DC), contact configuration (3PST-NO), and mounting interface (DIN Rail with screw terminals) ensure direct replacement capability in existing circuit designs.
• Product Status: The G9SA-301 AC/DC24 maintains active production status with current availability, addressing the obsolescence of the SR120MP01.
• Regulatory Compliance: The G9SA-301 AC/DC24 achieves ROHS3 compliance and REACH affected status, meeting current environmental and safety standards.
• Performance Enhancement: The G9SA-301 AC/DC24 provides increased contact rating (5A versus 1.25A) and extended switching voltage range (250VAC, 30VDC versus 24VDC), offering improved capability margins for the same application envelope.
• Temperature Range: Extended operating temperature range (-25°C ~ 55°C) provides broader environmental compatibility compared to the SR120MP01 (-10°C ~ 55°C).

Frequently Asked Questions (FAQ)

Q: Can the G9SA-301 AC/DC24 directly replace the SR120MP01 in existing installations?

A: Yes. Both relays share identical coil voltage (24VAC/DC), contact configuration (3PST-NO), DIN Rail mounting, and screw terminal termination. The G9SA-301 AC/DC24 is mechanically and electrically compatible for direct substitution.

Q: What are the key differences between these two relays?

A: The G9SA-301 AC/DC24 provides higher contact current rating (5A versus 1.25A), broader switching voltage capability (250VAC, 30VDC versus 24VDC), extended low-temperature operation (-25°C versus -10°C), and current RoHS3 compliance. These represent performance enhancements rather than compatibility limitations.

Q: Is the higher current rating of the G9SA-301 AC/DC24 a concern for SR120MP01 applications?

A: No. Higher contact rating provides additional capacity margin and does not create compatibility issues. The relay will operate correctly in circuits designed for the lower 1.25A rating of the SR120MP01.

Q: What is the packaging difference between these parts?

A: SR120MP01 is supplied in standard packaging, while G9SA-301 AC/DC24 is supplied in bulk packaging. Both are suitable for component replacement and integration into control systems.

Q: Are there any compliance or certification differences?

A: The G9SA-301 AC/DC24 is ROHS3 compliant and REACH affected, meeting current environmental regulations. The SR120MP01 carries "Not applicable" RoHS status due to its obsolete status. Both maintain MSL 1 (Unlimited) moisture sensitivity rating.