Switching DC power supplies are designed to supply low power loads. Available in 4 modifications: with outputs +24 V, +12 V, +6 V and +5 V for DIN rail mounting and in Z65 plastic cases.
Relays are intermediate between low power output devices of controllers (open collector type) and average power resistive loads up to 8 A (electrical heaters, contactors, starters, etc.).
Solid state relays (SSR) are used to control and switch alternating current in various power electric units and automation systems.