TOA / AT-303A Attenuator

The TOA AT-303A is a transformer-type wall-mounted volume controller that can handle a maximum input of 30W. Volume can be adjusted in five steps, allowing for precise settings. It features a one-touch terminal that allows for easy installation, allowing for wiring simply by inserting the terminal. With a compact design measuring just 41mm wide, there are no restrictions on installation location, even when installed next to a light switch. It is compatible with TOA plates (sold separately) and various commercially available electrical plates.

■Transformer-type volume control
■Panel sold separately

■Input Capacity
0.5 W to 30 W
■Volume Control
5 levels (0 dB, -6 dB, -12 dB, -18 dB, off)
■Compatible Wire
600 V vinyl-insulated wire (IV, HIV)
Solid copper wire: φ0.8 to φ1.6 mm
■Terminal
One-touch plug-in connector
■Operating Temperature Range
-10 °C to +50 °C
■Finish
Knob and Panel: ABS resin, milky white (similar to Munsell 5Y8.3/1)
Case: ABS resin, black (similar to Munsell N1.0)
■Dimensions
41 (W) x 108 (H) x 52.4 (D) mm
■Weight
210 g (main unit only)
■Accessories
Flush-mounted box mounting screws (countersunk head screws, M4 x 35)...2
■Compatible plates*
YP-1AF (sold separately)
Panasonic Corporation Full Color Plate (for 3 units), Toshiba Lighting & Technology Corporation E's Plate (for 3 units), Jinbo Electric Co., Ltd. New Mild Bee Series (for 3U)
■Compatible boxes
Exposed box: YS-11A (sold separately), Flush-mounted box: JIS C 8340
*Some commercially available resin plates have different finish colors, so please check.