Unfortunately not, 30PB or 30PBL are switch mechanisms which can be used for ON/OFF. They cannot be used for dimming lights.
is 30 series Standard Range universal push button dimmer mechanism, 250V 350W, that can be used for On / Off and dimming the lights. These are designed for
one-way operation only.
For further information, please visit https://www.clipsal.com/Trade/Products/ProductDetail?catno=31E2PUDM