The Siemens 3SF7844-8MB08-0SS1 is a Type 4 safety light curtain receiver from the SIMATIC FS450I family, designed for finger-protection applications with 14 mm resolution and a 600 mm protected height. It integrates into a safety circuit via PROFIsafe bus connection, covering a detection range of 0 to 6 m. The muting function allows temporary suspension of the light curtain during material pass-through without triggering a stop. This is the receiver unit; it requires a matched transmitter for operation. Type 4 per IEC 61496-1 means the light curtain can tolerate a single fault and still maintain the safety function — suitable for applications up to SIL 3 / PL e. The 14 mm resolution catches fingers reaching into the hazard zone (finger-protection class), while the 600 mm height guards a typical machine access opening. PROFIsafe connection means it drops directly onto a safety-rated PROFIBUS or PROFINET network without a separate safety relay or interface module.
Siemens 3SF7844-8MB08-0SS1 Type 4 Safety Light Curtain Recei
Siemens SIMATIC FS450I, Type 4 safety light curtain receiver, 14 mm resolution, 600 mm protected height, muting, 0 to 6 m range, PROFIsafe bus connection, 3SF7844-8MB08-0SS1.
Product details
Frequently asked questions
How do I get pricing and availability for 3SF7844-8MB08-0SS1?
Submit an RFQ through the distributor. Current pricing and stock levels are confirmed at quote time — this is a standard stocked item in the SIMATIC FS450I line, sourced through the independent distribution channel.
What safety level does the Type 4 rating provide?
Type 4 per IEC 61496-1 means the light curtain maintains the safety function even after a single fault, supporting control system architectures up to SIL 3 (IEC 62061) or PL e (EN ISO 13849-1). The 14 mm resolution provides finger detection per the standard.
What is the protected height and range of this receiver?
The 3SF7844-8MB08-0SS1 has a 600 mm protected height and a detection range of 0 to 6 m. The 14 mm resolution means it reliably detects objects as small as 14 mm diameter — typically fingers entering the guarded area.