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RMIA210024AC General Purpose Relay DPDT 24VAC Equivalent & Substitute Parts
Part Overview
The RMIA210024AC is a general purpose relay manufactured by Carlo Gavazzi Inc., featuring a DPDT (2 Form C) contact configuration with a 24VAC coil and 10A contact rating. This socketable relay is designed for industrial control applications requiring reliable switching of AC and DC loads.
The RMIA210024AC is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing maintenance and replacement requirements for installed equipment.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Coil Voltage | 24VAC |
| Contact Form | DPDT (2 Form C) |
| Contact Rating (Current) | 10 A |
| Switching Voltage | 250VAC, 30VDC - Max |
| Mounting Type | Socketable |
| Coil Type | Non Latching |
| Termination Style | Plug In |
| Operating Temperature Range | -55°C ~ 70°C |
| Must Operate Voltage | 19.2 VAC |
| Must Release Voltage | 7.2 VAC |
Substitute Part Grouping Explanation
Substitution of the RMIA210024AC is based on the following critical parameters that must match or be compatible:
- Coil Voltage: 24VAC (primary control signal requirement)
- Contact Form: DPDT (2 Form C) (functional switching configuration)
- Contact Rating: 10A minimum (load switching capacity)
- Mounting Type: Socketable (physical installation compatibility)
- Termination Style: Plug In (connection method)
- Coil Type: Non Latching (operational behavior)
- Must Operate/Release Voltages: 19.2 VAC / 7.2 VAC (control circuit compatibility)
The LY2N-AC24 from Omron Automation and Safety meets these core substitution criteria. Both relays share identical coil voltage, contact form, current rating, mounting type, and termination style. Operational voltage thresholds are identical, ensuring compatibility with existing control circuits.
Parameter Comparison
| Parameter | RMIA210024AC (Carlo Gavazzi) | LY2N-AC24 (Omron) |
|---|---|---|
| Manufacturer | Carlo Gavazzi Inc. | Omron Automation and Safety |
| Series | RMI | LY |
| Product Status | Obsolete | Active |
| Coil Voltage | 24VAC | 24VAC |
| Contact Form | DPDT (2 Form C) | DPDT (2 Form C) |
| Contact Rating (Current) | 10 A | 10 A |
| Switching Voltage - Max | 250VAC, 30VDC | 250VAC, 125VDC |
| Coil Current | 37 mA | 46 mA |
| Coil Resistance | 650 Ohms | 180 Ohms |
| Mounting Type | Socketable | Socketable |
| Termination Style | Plug In | Plug In |
| Must Operate Voltage | 19.2 VAC | 19.2 VAC |
| Must Release Voltage | 7.2 VAC | 7.2 VAC |
| Operate Time | 20 ms | 25 ms |
| Release Time | 20 ms | 25 ms |
| Operating Temperature Range | -55°C ~ 70°C | -25°C ~ 55°C |
| Contact Material | Silver Copper (AgCu3) | Silver Alloy |
| Features | Lighted Indicator | Lighted Indicator |
| RoHS Status | Not specified | RoHS Compliant |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8536.41.0050 | 8536.41.0050 |
Engineering Selection Recommendations
The LY2N-AC24 is a direct functional substitute for the obsolete RMIA210024AC. Both relays are classified under the same HTSUS code and share identical electrical control parameters (coil voltage, must operate/release voltages, contact form, and current rating).
The LY2N-AC24 offers the advantage of active product status, ensuring ongoing availability and manufacturer support. The substitute part is RoHS compliant, meeting current environmental and regulatory requirements for new installations and replacements.
Minor differences exist in operating temperature range (LY2N-AC24: -25°C ~ 55°C versus RMIA210024AC: -55°C ~ 70°C) and switching voltage DC rating (LY2N-AC24: 125VDC versus RMIA210024AC: 30VDC). These differences do not affect substitution in standard industrial control applications operating within the LY2N-AC24 temperature and voltage specifications. Coil current and resistance differences (46 mA / 180 Ohms for LY2N-AC24 versus 37 mA / 650 Ohms for RMIA210024AC) reflect design variations between manufacturers but do not impact functional compatibility in circuits designed for 24VAC operation.
Frequently Asked Questions (FAQ)
Q: Can the LY2N-AC24 directly replace the RMIA210024AC in existing installations?
A: Yes. Both relays share identical coil voltage (24VAC), contact form (DPDT), current rating (10A), mounting type (socketable), and termination style (plug in). Control circuit compatibility is ensured by matching must operate and must release voltages (19.2 VAC / 7.2 VAC). Physical socket compatibility allows direct installation without circuit modification.
Q: What are the key differences between these two relays?
A: The primary differences are product status (LY2N-AC24 is active; RMIA210024AC is obsolete), operating temperature range (LY2N-AC24: -25°C ~ 55°C; RMIA210024AC: -55°C ~ 70°C), DC switching voltage rating (LY2N-AC24: 125VDC; RMIA210024AC: 30VDC), and coil specifications (coil current and resistance). These differences do not affect substitution in standard industrial applications within the LY2N-AC24 operating envelope.
Q: Are there packaging differences between the RMIA210024AC and LY2N-AC24?
A: The RMIA210024AC is available in standard packaging. The LY2N-AC24 is supplied in bulk packaging. Both are socketable relays with plug-in termination, ensuring mechanical compatibility in relay socket installations.
Q: Does the LY2N-AC24 meet current regulatory requirements?
A: Yes. The LY2N-AC24 is RoHS compliant and classified under ECCN EAR99, meeting current environmental and export control requirements. The RMIA210024AC regulatory status is not specified in available documentation.
Q: What is the impact of the 5 ms difference in operate and release times?
A: The LY2N-AC24 has operate and release times of 25 ms compared to 20 ms for the RMIA210024AC. This 5 ms difference is negligible in standard industrial control applications. Applications requiring precise timing below 25 ms should be evaluated against specific system requirements.
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