Schneider Electric Bistable Relay - A9C30215 - ITLi
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Product Information
Full details
The Schneider Electric Acti 9 ITLi is a modular impulse relay designed for reliable control of lighting circuits and other applications requiring bistable switching. Its key benefit is the ability to maintain its contact state without continuous power, saving energy. A potential caveat is its specific control voltage requirements, which must match the system design. This relay offers a changeover contact (1 NO, 1 NC) with a 16A rating, suitable for AC-21 and AC-22 loads, and is designed for easy DIN rail mounting.
All features
| Series | ITLi |
|---|---|
| Model Part Number | A9C30215 |
| Brand | Schneider Electric |
Extended Product Information
FAQs
What is the primary function of an impulse relay like the ITLi?
An impulse relay, or bistable relay, switches its contacts ON or OFF in response to a momentary electrical pulse. It maintains its state (ON or OFF) without continuous power to the coil, making it energy efficient for applications like lighting control.
What are the available control voltages for the Schneider Electric Acti 9 ITLi?
The ITLi model supports two specific control voltages: 24V DC or 48V AC. It is crucial to use one of these specified voltages for proper operation.
Can this relay be used for dimming lights?
No, the ITLi is a simple ON/OFF switch. It is not designed for dimming or variable control of lighting.
What is the maximum load current the relay can switch?
The relay has a rated current of 16A for AC-21 and AC-22 applications. Always ensure your load does not exceed this rating.
How is the ITLi relay mounted?
It is designed for easy installation on a standard 35mm DIN rail.
What is the electrical endurance of this relay?
The electrical endurance is up to 200,000 cycles for AC-21 usage and 100,000 cycles for AC-22 usage.
Does the relay consume power continuously?
No, as a bistable relay, it only consumes power briefly when a pulse is applied to change its state. It consumes no power to hold its position.
Troubleshooting
Relay does not switch when control pulse is applied
Verify that the control voltage supplied to the coil is within the specified range (24VDC or 48VAC) and connected correctly. Ensure the pulse duration is sufficient. Check for any obstructions if manual operation is attempted.
Relay remains in one state and does not respond to subsequent pulses
Confirm that the correct control voltage is being supplied. Ensure the pulse is properly triggering the bistable mechanism. Check the load wiring to ensure it does not interfere with the relay's state.
Contacts are welded or not making proper connection
This may indicate overload or arcing. Ensure the load current does not exceed the 16A rating for AC-21/AC-22 duty. If the issue persists, the relay may need replacement.
Overheating of the relay
Check if the connected load current exceeds the 16A rating. Ensure adequate ventilation around the installed relay, especially if mounted in an enclosed panel.
Pros and Cons
Pros
- Energy-efficient due to bistable operation (no holding current needed)
- Versatile switching with both NO and NC contacts
- Wide operating voltage range for flexibility
- Compact, modular design for easy DIN rail installation
- Durable with high electrical endurance ratings
Cons
- Specific control voltage requirements (24VDC or 48VAC) may limit direct integration without a suitable power supply
- Switching frequency is limited to 5 operations per minute or 100 per day, unsuitable for high-frequency switching applications
- IP20 rating means it requires protection from dust and water in its installation environment
Setup, Compatibility & Care
Setup:
- Mounting: Secure the ITLi relay onto a standard 35mm DIN rail by clipping it into place.
- Wiring: Connect the control circuit to the designated coil terminals (e.g., A1/A2 or specific control voltage inputs) and the load circuit to the changeover contacts (COM, NO, NC).
- Power: Ensure the control voltage supplied to the coil matches either 24VDC or 48VAC as specified for the module.
Compatibility:
- Control Voltage: Verify that your system's control voltage is either 24VDC or 48VAC. Using other voltages may damage the relay.
- Load Type: Suitable for AC-21 (general loads) and AC-22 (light motor loads, capacitive/inductive loads) up to 16A. For higher currents or specific DC loads, use as a pilot relay.
- Enclosure: The IP20 rating requires installation within an appropriate enclosure to protect against dust and accidental contact.
Care:
- Cleaning: Disconnect power before cleaning. Use a dry or slightly damp cloth. Avoid solvents or abrasive cleaners.
- Environment: Operate within the specified temperature range (-20 to 50 °C) and humidity (0-95% non-condensing).
- Maintenance: Periodically check wiring connections for tightness. No internal maintenance is required.