Siemens 7SR105 Rho - Ordering Options

7SR105 Rho Description of Operation
©2018 Siemens Protection Devices Chapter 1 Page 10 of 57
Section 2: Hardware Description
2.1 General
The structure of the relay is based upon the compact hardware platform. The relays are supplied in a Size 4 case.
The hardware design provides a commonality between the products and components across the range of relays.
Table 2-1 Summary of 7SR105 Rho Motor Protection Relay Configurations
The 7SR105 Rho Motor Protection Relays are assembled from the following modules:
1. Front Fascia with 9 configurable LEDs and 1 Relay Healthy LED
2. Processor module
3. Current Analogue, Input module and Output module
4 x Current (Terminal X5)
6 x Binary Input (Terminal X1)
6 x Binary Outputs (Terminal X4)
4. Communication and Power Supply module
RS485 (Terminal X2)
Power supply (Terminal X3)
5. Temperature Inputs
With control push buttons
6 x Temp Inputs (Terminal X6 and X7)
Relay Current
Inputs
Voltage
Inputs
Binary
Inputs
Binary
Outputs
Temperature
Inputs
LEDs
7SR1053-
XXXX-
2EA0
4 0 6 6 0 10
7SR1053-
XXXX-
2FA0
4 0 6 6 6 10