Nameplate and what it commits to
The ABB ACS510-01-157A-4 is a standard-drive unit in the ACS510 family, built in frame size R6 and rated 157 A nominal (I2N) for continuous motor loads up to 9 kW — the headline a buyer confirms against the BOM line before anything else. It carries the SAFUR125F500 braking resistor paired with the NBRA-656C chopper at 4 Ohm (Rsel), which is what gives the drive a peak braking capacity of 113 kW (Ppeak) — the number that governs how hard the DC-link can absorb regenerated energy during a fast decel or an overhauling load. The output stage is built around an FOCH-0260-70 output choke rated 289 A thermal, with motor cable runs permitted up to 300 m whether the choke is fitted or not — so the EMC strategy and the motor-cable reach can be planned off the same ceiling.
Braking loop and decel envelope
Ppeak of 113 kW against a 9 kW continuous rating is the figure that tells you this drive was specified for high-inertia or overhauling loads where regenerated energy has to go somewhere fast — the SAFUR125F500 / NBRA-656C chain is sized for that peak, not for the running duty. Rsel of 4 Ohm is the resistor value the chopper is configured against; if the field retrofits a different resistor later, the chopper setpoint has to move with it, otherwise the brake current profile shifts and the thermal margin on the resistor changes.
Sourcing posture
Planners should allow the lead-time envelope of 6 to 10 weeks that the supply channel reports, with the SAFUR125F500 resistor and NBRA-656C chopper considered part of the same sourcing decision — splitting them across two orders risks a commissioning hold if one lands late.