Breaking capacity is the real selector here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The TM240 overcurrent release is a thermal-magnetic design — thermal element for overload, magnetic for short-circuit. Four poles give you three-phase plus neutral protection in a single package, which simplifies wiring in a 3-phase 4-wire system.
Lifecycle and sourcing — active, not obsolete
Power loss is 17.3 W maximum — relevant for thermal budgeting in a sealed panel.
The 4-pole width at 101.6 mm matches the standard 4-module MCCB footprint on DIN rail or bolted bus.