Ex STM 295-3G/D

Applied standards

EN 60947-5-1, EN IEC 60079-0, EN 60079-1, EN IEC 60079-7, EN 60079-18, EN 60079-31, EN ISO 13849-1, EN ISO 14119

Enclosure

thermoplastic, glass-fibre reinforced, shockproof, self-extinguishing UL 94 V-0

Switch type

type 2

Coding level

low coding

Tightening torque

cover screws: 0.5 … 0.6 Nm
enclosure mounting screws: 1 … 1.3 Nm
switch inserts M3 screw connection terminals: min. 0.6 Nm
solenoid M3.5 screw connection terminals: min. 0.8 Nm

Degree of protection

IP67 (IEC/EN 60529)

B_10d (10 % load)

1 million

T_M

max. 20 years

Contact material

silver

Switching system

slow action, positive break NC contacts A

Switching elements

1 NC/1 NO contact + 1 NC/1 NO contact or 2 NC + 1 NC/1 NO contact

Connection

screw connection terminals

Cable cross-section

solenoid: 0.2 … 1.5 mm² (AWG 24 … 16)
switch inserts: 0.75 … 1.5 mm² (AWG 18 … 16)

Cable entry

2 x M20 x 1.5; use only Ex approved and certified cable glands with min. degree of protection IP67 and admissible ambient temperature range

Clamping range

7 … 12 mm

Rated insulation voltage U_i

250 V

Rated impulse withstand voltage U_imp

4 kV

Utilisation category

AC-15; DC-13

Short-circuit protection

3 A / 1.5 A gG fuse;
direct-current solenoid: 2 A (slow blow)

Safety class

II

Power consumption

<2.5 W (continuous operation), max. 47 W (for 250 ms)

Operation cycles

max. 1200/h

Mechanical life

> 500 000 operations

Locking force F_max

1000 N

Impact energy

max. 7 J

Ambient temperature

–20 °C … +55 °C

Ex marking

L II 3G Ex dc ec mc IIC T4 Gc
L II 3D Ex tc IIIC T100°C Dc