CM1-24V Equivalent & Substitute Parts Reference

Part Overview

The CM1-24V is a non-latching relay manufactured by Panasonic Electric Works, designed for general-purpose switching applications requiring a 24VDC coil voltage and SPDT (1 Form C) contact configuration. This relay operates with a coil current of 75 mA and provides 15 A contact rating at 28VDC nominal switching voltage. The component is fully sealed, socketable, and RoHS compliant, with an operating temperature range of -40°C to 85°C. Identification of equivalent and substitute parts is necessary to ensure supply chain flexibility, manage inventory alternatives, and maintain design compatibility across production batches.

Substiute Parts

CM1-24V

Panasonic Electric WorksIn Stock: 962CM1-24V Datasheet

Current PartRFQ

A11CSQ24VDC1.5

CIT Relay and SwitchIn Stock: 1184A11CSQ24VDC1.5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CM1-24V with the A11CSQ24VDC1.5 is based on the following critical parameters:

• Coil Voltage Match: Both relays operate at 24VDC, ensuring direct control circuit compatibility
• Contact Configuration Match: Both provide SPDT (1 Form C) contact form, maintaining identical switching topology
• Coil Type Match: Both are non-latching relays with comparable coil current specifications (75 mA vs. 62.5 mA)
• Mounting and Termination Compatibility: Both are socketable with plug-in termination, allowing physical interchangeability in standard relay sockets
• Operating Temperature Range Match: Both function across -40°C to 85°C, ensuring thermal compatibility
• Regulatory Compliance Match: Both are RoHS compliant and carry EAR99 ECCN classification
• Sealed Construction: Both feature fully sealed designs for environmental protection

The A11CSQ24VDC1.5 provides higher contact current rating (30 A vs. 15 A) and higher maximum switching voltage (75VDC vs. 28VDC nominal), making it suitable for applications requiring greater switching capacity while maintaining the same control voltage and contact form.

Parameter Comparison

Engineering Selection Recommendations

Both the CM1-24V and A11CSQ24VDC1.5 are active product status relays with full RoHS compliance and EAR99 ECCN classification. Selection between these parts should be based on application-specific load requirements:

• CM1-24V is appropriate for applications with maximum load current requirements of 15 A at 28VDC nominal switching voltage
• A11CSQ24VDC1.5 is appropriate for applications requiring higher contact current capacity (30 A) or higher switching voltage tolerance (75VDC maximum)

Both relays maintain identical coil voltage (24VDC), contact configuration (SPDT), and operating temperature range (-40°C to 85°C), ensuring functional compatibility in control circuits. The A11CSQ24VDC1.5 features a lower coil current requirement (62.5 mA vs. 75 mA) and reduced coil power consumption (1.5W vs. 1.8W), which may provide marginal benefits in power-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the A11CSQ24VDC1.5 directly replace the CM1-24V in existing designs?

A: Direct physical and electrical replacement is possible due to matching coil voltage (24VDC), contact form (SPDT), socketable mounting, and plug-in termination. However, the higher contact current rating (30 A vs. 15 A) and maximum switching voltage (75VDC vs. 28VDC) of the A11CSQ24VDC1.5 must be verified as compatible with the application's load specifications.

Q: What are the key differences in contact material between these relays?

A: The CM1-24V uses Silver Alloy with Cadmium Free composition, while the A11CSQ24VDC1.5 uses Silver Tin Oxide (AgSnO). Both materials are suitable for general-purpose switching applications and are RoHS compliant.

Q: Are there differences in termination compatibility?

A: The CM1-24V provides standard plug-in termination. The A11CSQ24VDC1.5 provides both plug-in and quick connect 0.187" (4.7mm) termination options, offering greater flexibility in circuit board integration.

Q: How do the coil specifications compare?

A: The A11CSQ24VDC1.5 requires lower coil current (62.5 mA vs. 75 mA) and lower coil power (1.5W vs. 1.8W) while maintaining the same 24VDC coil voltage. The A11CSQ24VDC1.5 has higher coil resistance (384 Ohms vs. 320 Ohms).

Q: Are both relays suitable for the same temperature operating range?

A: Yes, both relays operate across -40°C to 85°C, ensuring thermal compatibility in equivalent applications.

Q: What is the significance of the Must Operate Voltage difference?

A: The CM1-24V must operate at 14 VDC minimum, while the A11CSQ24VDC1.5 requires 18 VDC minimum. In applications with marginal supply voltage, the CM1-24V provides more reliable operation at lower control voltages.