4SSO15D = 10A (double pole) switched socket (72mm wide)
4SSO15D15 = 15A (double pole) switched socket (72mm wide)
4PSO10D = 10A auto-switched (double pole) socket (45mm wide)
4PSO10DL = 10A auto-switched (double pole) socket with round earth (45mm wide)
4PSO15D = 15A auto-switched (double pole) socket (45mm wide)
Please go to the website via the following links below, click on the image and check under the Documentation Tab for more information.
Australia -
https://www.clipsal.com/search?q=4SSO1New Zealand -
https://www.pdl.co.nz/search?q=DIN%20Rail%20Mount,%20Switch%20Socket%20Outlets