Siemens Multifunction Protective Relay 7SJ6221-4EB00-1FE0
Siemens 7SJ6221-4EB00-1FE0 Multifunction Protective Relay
The Siemens 7SJ6221-4EB00-1FE0 is a multifunction protective relay featuring a backlit text display with 4 x 20 characters and 7 programmable LEDs. It is housed in a 1/3 19" case and offers 11 binary inputs and 6 binary outputs, along with a watchdog contact. This unit is designed for phase current transformer inputs of 1A and operates with a supply voltage of DC 60V to 125V, with a trigger level for binary inputs at DC 19V. It supports flush mounting with screw terminals.
This relay provides comprehensive protection functions including phase overcurrent (50/51), ground overcurrent (50N/51N), overload protection (49), breaker failure protection (50BF), over/under frequency (81U/O), and over/under voltage (27/59). It is suitable for a wide range of power system protection applications in substations, industrial facilities, and power generation.
Stanlo Automation, a veteran-owned surplus parts distributor, ensures that critical protective devices like the Siemens 7SJ6221-4EB00-1FE0 are available for your MRO needs. We help maintain the reliability and safety of your electrical infrastructure.
| Part Number | 7SJ6221-4EB00-1FE0 |
| Manufacturer | Siemens |
| Series | SIPROTEC Compact 7SJ62 |
| Type | Multifunction Protective Relay |
| Display | Backlit text, 4x20 chars |
| LEDs | 7 programmable |
| Case | 1/3 19" |
| Binary Inputs | 11 |
| Binary Outputs | 6 |
| Watchdog Contact | Yes |
| CT Input | 1A Phase Current |
| Supply Voltage | DC 60V-125V |
| Flush Mounting | Yes |
| Terminals | Screw |