Emergency pull-wire switch

ZS 73

  • Metal enclosure

  • 2 contacts

  • Wire length up to 130 m

  • 2 different spring force variants available

  • Release by push button (VD)

  • Wire pull and breakage detection

  • Watertight collar W for protection against penetration of dirt

Technical data

Applied standards

EN 60947-5-1, EN 60947-5-5, EN ISO 13850, EN ISO 13849-1


aluminium die-cast, enamel finish


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

Degree of protection

ZS 73 WVD: IP65; ZS 73 VD: IP54 (IEC/EN 60529)

B10d (10 % load)

100 000


max. 20 years

Contact material


Switching elements

1 NC/1 NO contact or 2 NC contacts, type Zb

Switching system

snap action, positive break NC contacts A


screw connection terminals

Cable cross-section

min. 0.5 mm², max. 2.5 mm² (incl. conductor ferrules)

Stripping length

6 mm

Cable entry

1 x M16 x 1.5

Rated impulse withstand voltage Uimp

6 kV

Rated insulation voltage Ui

400 V

Conventional thermal current Ithe

6 A

Utilisation category


Rated operating current/voltage Ie/Ue

6 A/400 VAC

Short-circuit protection

6 A gG/gN fuse

Ambient temperature

–25 °C … +70 °C

Mechanical life

> 100 000 operations

Indicator lamp 

as option

Max. wire length

130 m


ß d Ö ]


Mounting and wiring instructions – ZS 73 V… / ZS 73 S V…

German [de], English [en], French [fr], Italian [it], Portuguese [pt], Russian [ru]

PDF 5 MB 04.10.2023
Mounting and wiring instructions – ZS 73 V… / ZS 73 S V… (de/en/zh)

German [de], English [en], Chinese [zh]

PDF 6 MB 04.10.2023
Please go to the relevant product pages for additional downloads.

Other interesting products

Ex ZS 73

Alternative version with explosion protection

ZS 73 -40°C Extreme

Cold-resistant version

ZS 73 Niro hard-coated Extreme

Version with pull-wire unit made of stainless steel and hard-coated enclosure

ZS 73

Pull-wire switch without release