Siemens 6ES5951-7LB21 simatic s5, 951 power supply unit for s5-115u/h, w/o back-up battery; 120/230v ac; 5v dc, 3a POWER SUPPLY, 951 MODULE SIMATIC S5 3 AMP, 120/230 VAC FOR S5-115U/H WITHOUT BACKUP BATTERY SPARE PART
