Page 136 - EPR Catalog 2015

Insulation monitoring relays for unearthed supply systems
Technical data

CM-IWS.2 CM-IWS.1 CM-IWN.1, 4, 5, 6

Output circuits

Kind of output relay, 1 c/o (SPDT) contact 2 x 1 or 1 x 2 c/o
closed-circuit principle 1) (SPDT) contacts
2 Operating principle configurable

open- or closed
circuit principle 1)
configurable

Contact material AC-12 (resistive) at 230 V AgNi alloy, Cd free
Rated voltage (VDE 0110, IEC 60947-1) AC-15 (inductive) at 230 V 250 V AC / 300 V DC
Min. switching voltage / Min. switching current 24 V / 10 mA
Max. switching voltage / Max. switching current DC-12 (resistive) at 24 V see data sheet
Rated operational current Ie (IEC/EN 60947- DC-13 (inductive) at 24 V 4A
5-1) 3A
Utilization category 4A
AC rating (UL 508) (Control Circuit Rating Code) 2A
B 300, pilot duty general purpose (250 V, 4 A, cos I 0.75)

max. rated operational voltage 250 V AC

max. continuous thermal 4 A
current at B 300

Mechanical lifetime max. making/breaking 3600/360 VA
Electrical lifetime (AC-12, 230 V, 4 A) apparent power at B 300
Max. fuse rating to achieve short-circuit protection
30 x 106 switching cycles
Conventional thermal current Ith (IEC/EN 60947-1) 0.1 x 106 switching cycles
n/c contact 6 A fast-acting
n/o contact 10 A fast-acting
4A

General data

Duty time 100 %
Dimensions (W x H x D)
product dimension 22.5 x 85.6 x 103.7 mm
(0.89 x 3.37 x 4.08 in) 45 x 85.6 x 103.7 mm
(0.89 x 3.37 x 4.08 in)

packaging dimenesion 97 x 109 x 30 mm (3.82 x 4.29 x 1.18 in) 97 x 109 x 30 mm
(3.82 x 4.29 x 1.18 in)

Weight net weight CM-IWS.2P: CM-IWS.1P: CM-IWN.xP:
0.130 kg (0.287 lb) 0.137 kg (0.302 lb) 0.217 kg (0.478 lb)
CM-IWS.2S: CM-IWS.1S: CM-IWN.xS:
0.141 kg (0.311 lb) 0.148 kg (0.326 lb) 0.241 kg (0.531 lb)

gross weight CM-IWS.2P: CM-IWS.1P: CM-IWN.xP:
0.155 kg (0.342 lb) 0.162 kg (0.357 lb) 0.246 kg (0.542 lb)
CM-IWS.2S: CM-IWS.1S: CM-IWN.xS:
0.166 kg (0.366 lb) 0.173 kg (0.381 lb) 0.270 kg (0.595 lb)

Mounting DIN rail (IEC/EN 60715), snap-on mounting without any tool
Mounting position
Minimum distance to other units any

vertical not necessary

horizontal 10 mm (0.39 in) not necessary 10 mm (0.39 in)

at Un > 240 V at Un > 400 V

Material of housing UL 94 V-0
Degree of protection housing / terminal IP50 / IP20

Electrical connection

Screw connection technology Easy Connect Technology
(Push-in)

Wire size fine-strand with(out) wire end 1 x 0.5-2.5 mm2 (1 x 20-14 AWG) 2 x 0.5-1.5 mm2 (2 x 20-16 AWG)
ferrule 2 x 0.5-1.5 mm2 (2 x 20-16 AWG) 2 x 0.5-1.5 mm2 (2 x 20-16 AWG)
Stripping length
Tightening torque rigid 1 x 0.5-4 mm2 (1 x 20-12 AWG)
Environmental data 2 x 0.5-2.5 mm2 (2 x 20-14 AWG)
Ambient temperature ranges
Climatic category 8 mm (0.32 in)
Damp heat, cyclic 0.6-0.8 Nm (5.31-7.08 lb.in)
Vibration, sinusoidal
Shock, half-sine operation / storage / transport -25...+60 °C/-40...+85 °C/-40...+85 °C
IEC/EN 60721-3-3 3K5 (no condensation, no ice formation)

IEC/EN 60068-2-30 6 x 24 h cycle, 55 °C, 95 % RH
IEC/EN 60255-21-1 Class 2
IEC/EN 60255-21-2 Class 2

1) Closed-circuit principle: Output relay(s) de-energize(s) if a fault is occuring
Open-circuit principle: Output relay(s) energize(s) if a fault is occuring

2/69 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210