Guardmaster 440N

The Allen-Bradley Guardmaster 440N family is a line of non-contact safety interlock switches designed for machine guarding applications where physical contact between the actuator and switch body is not required. The family encompasses two primary sub-series found across its 184 catalog numbers: the Sipha (440N-S) series and the SensaGuard (440N-Z) series. In the 440N-Z catalog number, the characters following the prefix encode key configuration details — the Z21 base indicates the SensaGuard platform, the next character denotes coding type (S=standard, U=unique, X=cross-reading), the following digit reflects contact configuration (e.g., 1=2 N.C. safety only, 2=2 N.C. safety + 1 N.O. aux), and the connector suffix identifies the output connection style (H, J, A, B, etc.). Popular in-stock examples include the 440N-Z21S26H (standard-coded, 2 N.C./1 N.O., solid-state) and the 440N-S32013 Sipha control unit operating at 24V AC/DC with automatic/manual reset. For full electrical ratings, dimensional data, and selection guidance, refer to the Guardmaster 440N Safety Switch Technical Data.

Guardmaster 440N

Allen-Bradley 440N-Z21S26J Non Contact Switch,SensaGuard,2 N.C. Safety, 1 N.O Aux,Solid

Allen-Bradley 440N-Z21SS2A 440N Non Contact Switch,SensaGuard,No Special Features, 2 N.

Allen-Bradley 440N-Z21SS2AN 440N Non Contact Switch,SensaGuard,Margin Indication 2 N.C.

Allen-Bradley 440N-Z21SS2AN9 440N Non Contact Switch,SensaGuard,Magnetic Hold and Margin,

Allen-Bradley 440N-Z21SS2B 440N Non Contact Switch,SensaGuard,No Special Features,2 N.C

Allen-Bradley 440N-Z21SS2BN 440N Non Contact Switch,SensaGuard,Margin Indication, 2 N.C.

Allen-Bradley 440N-Z21SS2BN9 440N Non Contact Switch,SensaGuard,Magnetic Hold and Margin,

Allen-Bradley 440N-Z21SS2H 440N Non Contact Switch,SensaGuard,No Special Features, 2 N.

Allen-Bradley 440N-Z21SS2H-CU 440N Non Contact Switch,SensaGuard, with copper shield, 2 N.

Allen-Bradley 440N-Z21SS2HN 440N Non Contact Switch,SensaGuard,Margin Indication, 2 N.C.

Allen-Bradley 440N-Z21SS2HN9 440N Non Contact Switch,SensaGuard,Magnetic Hold and Margin,

Allen-Bradley 440N-Z21SS2J 440,SensaGuard,Solid State Contacts,Standard Actuator, 5 Pin

Allen-Bradley 440N-Z21SS2J-CU 440N Non Contact Switch,SensaGuard, with copper shield, 2 N.

Allen-Bradley 440N-Z21SS2JN 440N Non Contact Switch,SensaGuard,Margin Indication, 2 N.C.

Allen-Bradley 440N-Z21SS2JN9 440N Non Contact Switch,SensaGuard,Magnetic Hold and Margin,

Allen-Bradley 440N-Z21SS3PA 440N Non Contact Switch,SensaGuard,Adjustable Magnetic Hold,

Allen-Bradley 440N-Z21SS3PB 440N Non Contact Switch,SensaGuard,Adjustable Magnetic Hold,

Allen-Bradley 440N-Z21SS3PH 440N Non Contact Switch,SensaGuard,Adjustable Magnetic Hold,

Allen-Bradley 440N-Z21SS3PJ 440N Non Contact Switch,SensaGuard,Adjustable Magnetic Hold,

Allen-Bradley 440N-Z21U16A Non Contact Switch,SensaGuard,No Special Features,2 N.C. Saf

Allen-Bradley 440N-Z21U16B Non Contact Switch,SensaGuard,No Special Features,2 N.C. Saf

Allen-Bradley 440N-Z21U16H Non Contact Switch,SensaGuard,No Special Features,2 N.C. Saf

Allen-Bradley 440N-Z21U16J Non Contact Switch,SensaGuard,2 N.C. Safety, 1 N.O Aux,Solid

Allen-Bradley 440N-Z21U17A Non Contact Switch,SensaGuard,No Special Features,2 N.C. Saf

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