▸ Key Features:
• Thermal overload relay for motor protection
• Adjustable current setting from 17 to 22 A
• Class 10 tripping characteristic
• Phase failure sensitivity
• Manual or automatic reset selection
• Integrated auxiliary contacts (1 NO / 1 NC)
• Direct mounting to Siemens S0 contactors
• Screw terminal connections for main and auxiliary circuits
▸ Applications:
• Three‑phase motor protection
• Motor starter assemblies
• Industrial control panels
• Pumps, conveyors, compressors, and machinery
• OEM and retrofit motor control systems
▸ Alternative Model Numbers:
3RU2126-4DB0
3RU2126-1CB0
3RU2126-4FB0
Other Siemens SIRIUS 3RU2 overload relays
▸ Common Misspellings or Phrasing:
Siemens 3RU2126 4CB0
3RU2126‑4CBO
Siemens SIRIUS overload relay 22A
Siemens motor overload Class 10
