Ex 98 SR

Features/Options

  • Ex zone 1 and 21
  • Cold-resistant down to -40 °C
  • Metal enclosure
  • 2 contacts
  • Design to EN 50041
  • Wiring compartment
  • Adjustable-length rod lever with nylon roller
  • For light- and medium-heavy applications
  • Special version only for gas Ex zone 2 and dust Ex zone 22 available
  • N.B.: Please state required international approvals with your order!

Technical data

StandardsEN 60947-5-1; EN 60079-0,
EN 60079-1, EN 60079-7,
EN 60079-31; EN ISO 13849-1
EnclosureCorrosion-resistant aluminium, powder-coated, similar to RAL 7016
CoverStainless steel 1.4401, powder-coated, similar to RAL 1003
Degree of protectionIP 66 to IEC/EN 60529
Contact materialsilver
Switching systemslow or snap action
Switching elements1 NC/1 NO contact or 2 NC contacts, type Zb
Connectionscrew connection terminals, min. 0,75 mm² AWG 18, max. 1,5 mm² AWG 16, incl. conductor ferrules
Cable entry1 x M20 x 1.5 for
cable section 5 … 9 mm
B10d (10 % Load)2 million
TMmax. 20 years
Uimp4 kV
Ui250 V
Iemax. 4.4 A T6 / max. 6.6 A T5
Uemax. 250 VAC; 125 VDC
Utilisation categoryAC-15; DC-13
Max. fuse rating6 A gG/gN fuse
Ambient temperatureT6: -40° C … +70° C (max. 4.4 A)
T5: -40° C … +70° C (max. 6.6 A)
Mechanical life> 1 million operations
Operation cycles1800/h
Repeat accuracy of switching points± 0.1 mm
Impact energymax. 7 J
Ex marking II 2G Ex de IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db
IECEx Ex de IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db
ApprovalsDMT 01 ATEX E 178
IECEx BVS 07.0014
Ordering details

Slow action

1 NC/1 NO contact

Type   Material no.
Ex ES 98 SR-11 -40°C 1420735

Slow action

2 NC contacts

Type   Material no.
Ex ES 98 SR-02 -40°C 1420738

Slow action

1 NC/1 NO contact with overlapping

Type   Material no.
Ex ES 98 SR-11U -40°C 1420740

Snap action

1 NC/1 NO contact

Type   Material no.
Ex EM 98 SR-11 -40°C 1443731