We will give it a ‘yes’ to this question. As long as the luminaire is certified with safety standard, no problem would occur in terms of luminaire operation or safety.
(In this case the dimmable bulbs refer to bulbs capable of being controlled by phase control dimming opposed to non-dimmable bulbs which can only be controlled by regular on/off switches instead of dimmer switches.)
In brief, phase control dimmer switch controls the brightness of the bulb by limiting the power from mains supply flowing into the bulb. Less power, less brightness. (more detailed information can be found in Phase-cut Dimming) If you use dimmable bulb in non dimmable light, all power from mains supply will flow into to the bulb when the switch is on, as if adjusting a dimmer switch to make the bulb perform 100% brightness.
(1) Voltage waveform from the mains supply into the bulb when a regular switch is on
(2) Voltage waveform from the mains supply into the bulb when
a phase control dimmer switch is at 80% brightness level
Whilst there is no effect with regards to operation and safety, we would still suggest not to adopt non-dimmable bulbs in non-dimmable lights. Two reasons are as follows.
Purchased Price
Generally speaking, the unit price for dimmable bulbs would be higher than those of non-dimmable bulbs. Though the driver technology for LED bulbs advanced as days passed by causing constant drop on LED bulb cost, there is still a difference in between the two. Non-dimmable bulb is enough for use unless you had the idea of changing regular on/off switch to a dimmer switch.
Power Saved
The power circuit of dimmable LED bulbs is far more complexed than those of non-dimmable LED bulbs. Not only the cost variance but also the power efficiency and the power factor differentiated these two kinds of bulbs in the market. The luminous efficiency and power factor of a dimmable LED bulb is by and large lower than a non-dimmable LED bulb. Let’s say if we need 800lm brightness in an area, dimmable LED bulbs would need more power to generate the identical brightness comparing to non-dimmable bulbs. Therefore, for those who do not have the necessity of dimming, adopting non-dimmable LED bulbs would be a more energy-efficient option while saving cost at the same time.