The ABB 2TLA020057R0000 is a C5 cable with 5 conductors of 0.34 mm² cross-section. This is the signal/power cable used with ABB safety devices — think light curtains, safety switches, or two-hand controls that need a factory-terminated 5-wire umbilical. The 5x0.34 construction is common for 24 VDC safety circuits where you need power plus two N/C and two N/O contacts, or a dual-channel safety input with a feedback loop.
The 5x0.34 mm² cable is pre-terminated at the factory with the C5 connector on one end. That connector mates to the M12 or 5-pin male receptacle on ABB safety controllers (Pluto, Orion, or the older Jokab series). The other end is unterminated flying leads, so you land the wires in your panel terminal block. The 0.34 mm² (roughly 22 AWG) is sized for the control-circuit current draw of the safety device — typically under 2 A total — and stays within the voltage drop limits for runs up to about 30 meters at 24 VDC.