2.25
Electrical rating 16 (4) A 250 V~
10 (4) A 250 V~ 5E4
5/ 100 A 250 V~
16 A 125 - 250 V AC
1 HP 125 V AC
2 HP 250 V AC
Inrush current ST-switches 100 A capacitive 104operations
Mechanical life endurance "5E4
Contact resistance (new state) < 100 m#(12 V, 1A DC)
Insulation resistance (new state) > 100 M#(500 V DC between the
open contacts)
High voltage resistance 1250 V eff. (between the open
(new state) contacts)
3750 V eff. (reinforced insulation)
Resistance to tracking PTI 250
Contact gap "3 mm
Insulation spacing "8 mm
Protection type IP 40
Ambient temperature terminal side -20 °C ... +100 °C no condensation
actuating side -20 °C ... + 55 °C no condensation
Storage temperature -40 °C ... + 80 °C
Actuating force 3-5 N
Flammability UL 94 V-2
Heat and fire-resistance 850 °C (category D)
Material housing and rocker PA
Material rocker illuminated PA/PC
Contacts Ag
Terminals CuZn resp.silver-plated
Temperature rise at the terminals max. 30 K (UL 1054)
(according to electrical life endurance) max. 55 K (EN 61058-1)
Solderability of terminals max. 350 °C, 3 sec. (no pressure on the
terminals when soldering by hand!)
Push-on force of connectors !80 N
Approval marks r a
Suitable for appliances of protection class II
FORCED CONTACT OPENING
The series 1550 is designed in order to
force mechanicallly welded contacts
(melting under heat) which may occur at
extremely high switching loads to open.
The test conditions comply with EN 61058-1 and UL 1054
stop point in the
rocker dome
contact bridge
actuator