The CM-SRS.21S is a single-functional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 110 - 130 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 3-30 mA, 10-100 mA and 0.1-1 A and works according to the open-circuit principle. The CM-SRS.21S is configurable for over- or undercurrent monitoring. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value and the tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals.
Industrial Relays
CM-SRS.21S Current monitoring relay 2co, B-C3mA-1A RMS, 110-130VAC
Nortécnica Ref:
EAN:
4016779852302
Description
Technical Information
Attributes
Largura
22.5
Altura
85.6
Profundidade
103.7
Type of current
AC
Current measuring range
0.1
100
External current transformer
No
Voltage measuring range
-
-
Voltage type supply voltage
AC
External power supply required
Yes
With detachable clamps
No
Single-phase hysteresis possible
Yes
Three-phase hysteresis possible
No
Single-phase under current possible
Yes
Three-phase under current possible
No
Single-phase overcurrent possible
Yes
Three-phase overcurrent possible
No
Contains function DC-voltage under current
Yes
Contains function DC-voltage overcurrent
Yes
Function DC-current hysteresis
Yes
Type of electric connection
Other
Voltage type operating voltage
AC
Corrente estipulada do interruptor
4
Supply voltage AC 50 Hz
110
130
Supply voltage AC 60 Hz
110
130
Supply voltage DC
-
-
Tempo de atraso máx. permitido de tempo na energização
30
Tempo de atraso min. ajustável de tempo na energização
0
Tempo de atraso da max. permitido
30
Tempo de atraso de min. ajustável
0
Response value amperage 1
-
-
Response value amperage 2
-
-
Operating voltage AC 50 Hz
230
230
Operating voltage AC 60 Hz
230
230
Operating voltage DC
-
-
Número de contatos como contato normalmente fechado
-
Número de contatos como contato normalmente aberto
-
Número de contatos como inversores
-
Brands
ABB
Descrição Longa
The CM-SRS.21S is a single-functional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 110 - 130 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 3-30 mA, 10-100 mA and 0.1-1 A and works according to the open-circuit principle. The CM-SRS.21S is configurable for over- or undercurrent monitoring. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value and the tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals.