Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s4.1
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
633
Number of cycles x 1000
Switching current (A)
Fig.: Service life graphs at 110 V DC
Example
} Inductive load: 0.2 A
} Utilisation category: AC15
} Contact service life: 1 000 000 cycles
Provided the application to be implemented requires fewer than 1 000 000 cycles, the PFH
value (see Technical details [ 622]) can be used in the calculation.
To increase the service life, sufficient spark suppression must be provided on all relay con-
tacts. With capacitive loads, any power surges that occur must be noted. With DC contact-
ors, use flywheel diodes for spark suppression.
Order reference
Product type Features Connection type Order no.
PNOZ s4.1 24 VDC Screw terminals 750 124
PNOZ s4.1 C 24 VDC Spring-loaded terminal 751 124
PNOZ s4.1 48 - 240 V AC/DC Screw terminals 750 154
PNOZ s4.1 C 48 - 240 V AC/DC Spring-loaded terminals 751 154