Schneider Electric Impulse Relay - iTL - A9C30815
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Product Information
Full details
The Schneider Electric Acti 9 iTL impulse relay (MPN: A9C30815) is designed for electrical professionals managing lighting circuits and controlling devices via pushbuttons. Its primary benefit is enabling on/off control from multiple locations with a latching function, ideal for various space sizes, contributing to effective lighting management and energy savings. A key consideration is its specific coil voltage requirements (110V DC or 230-240V AC). This compact relay offers 16A switching capacity and SPDT contacts, featuring robust insulation for enhanced safety.
All features
| Series | iTL |
|---|---|
| Model Part Number | A9C30815 |
| Brand | Schneider Electric |
Extended Product Information
FAQs
What is an impulse relay?
An impulse relay, also known as a bistable relay or latching relay, switches its contacts with a momentary pulse of power to the coil. It maintains its last switched state even after the pulse is removed, requiring another pulse to change state.
Can I control this relay with standard light switches?
Yes, you can use standard momentary pushbuttons with this relay. Avoid using standard ON/OFF toggle switches, as they provide continuous power and are not suitable for impulse control.
What is the difference between the 110V DC and 230-240V AC coil options?
These are the two distinct voltages that can be applied to the relay's coil to activate it. You must use the coil voltage that matches your control circuit. The relay is designed to function with either one, but not simultaneously.
How many devices can I control with one relay?
The relay has one set of changeover (SPDT) contacts rated for 16A. You can control a single lighting circuit or device (or multiple devices wired in parallel) as long as their total load does not exceed 16A at the appropriate voltage.
Can I use this relay for DC loads?
The relay is rated for switching AC loads up to 250V AC. While it may work for low-power DC applications, its primary design and ratings are for AC circuits. Consult the datasheet for specific DC switching capabilities if required.
What does 'latching function' mean in this context?
The 'latching function' means the relay remembers its last state (ON or OFF) without needing continuous power. A brief pulse turns it ON, and another brief pulse turns it OFF. This is energy-efficient compared to relays that require constant coil power to maintain a state.
Troubleshooting
Relay does not switch on/off
Verify the correct coil voltage (110V DC or 230-240V AC) is applied. Check for loose wiring connections at the coil terminals. Ensure the pushbutton circuit is functioning correctly.
Load remains energized or de-energized
Confirm the load wiring is connected correctly to the NO/NC and common terminals. Check the contact current rating (16A) is not exceeded. Inspect for mechanical obstruction or damage to the contacts.
Intermittent operation
Check for loose wiring, especially in the pushbutton control circuit. Ensure the operating environment is within the specified temperature range. Clean any dust or debris from around the relay mechanism.
Pros and Cons
Pros
- Enables convenient control of lighting from multiple locations.
- Contributes to energy savings through efficient lighting management.
- Compact size saves valuable space in electrical panels.
- Robust construction with insulation for enhanced safety.
- Flexible installation due to dual coil voltage compatibility.
Cons
- Requires specific coil voltages (110V DC or 230-240V AC), not universally compatible.
- Primarily designed for impulse control, not continuous duty switching.
- Terminal type is tunnel, which may require specific wire preparation.
- Does not include advanced features like remote diagnostics or network connectivity.
Setup, Compatibility & Care
Setup:
- Ensure the power supply to the relay's coil is de-energized.
- Connect the control circuit wires to the appropriate coil terminals (110V DC or 230-240V AC, observe polarity for DC).
- Connect the load circuit wires to the common, normally open (NO), and normally closed (NC) contacts as per your wiring diagram.
- Ensure all connections are secure in the tunnel terminals.
- Mount the relay in a suitable electrical enclosure.
Compatibility:
- Coil Voltage: Compatible with 110V DC or 230-240V AC (50-60 Hz) control circuits.
- Load Voltage: Can switch AC loads up to 250V AC.
- Load Current: Suitable for loads up to 16A.
- Mounting: Designed for DIN rail mounting (standard 35mm).
Care:
- Cleaning: Disconnect power before cleaning. Use a dry or slightly damp cloth to wipe the exterior. Avoid solvents or abrasive cleaners.
- Environment: Operate within the specified temperature range of -20 to 50 °C. Protect from excessive dust, moisture, and vibration.
- Inspection: Periodically inspect wiring connections for tightness and signs of wear.