The Siemens 3RK1901-2NR10 is an AS-Interface M12 branch that transitions the AS-i flat cable to a single M12 socket — no auxiliary power (U_ASI only). It uses an insulation-piercing method for the flat cable, so you don't strip or terminate individual conductors; the branch clamps directly onto the AS-i ribbon. Rated for 4 A continuous and the full AS-i voltage range of 26.5 to 31.6 V, it's built for the washdown zone with IP67/68/69K sealing. The screw-fixing mount holds it in place on a panel or machine frame, and the cable must not end in the feeder — meaning the flat cable runs through the branch and continues to the next drop, not dead-ending here.
Siemens 3RK1901-2NR10 AS-i M12 Branch, 4 A, IP67/68/69K
MPN3RK1901-2NR10
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Siemens SIRIUS 3RK1901-2NR10 AS-Interface M12 branch, 1 socket, screw fixing, 26.5–31.6 V, 4 A, IP67/68/69K.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Note | cable must not end in the feeder |
| Function | AS-i flat cable transition to M12 |
| Number sockets | 1 |
| Type of device | AS-Interface accessories |
| Type of mounting | screw fixing |
| Operating temperature | -25 ... +75°C |
| IP rating | IP67/68/69K |
| Contacts load rating max | 4A |
| Inputs socket assignment | 1 = ASI + 3=ASI - |
| Type of electrical connection | insulation piercing method for AS-Interface flat cable |
| Operational current rated value | 4A |
| Tightening torque of fixing screw | 1.65 ... 1.65N·m |
| Ambient temperature during storage | -25 ... +85°C |
| Operating voltage according to AS-Interface spezification | 26.5 ... 31.6V |
Product details
Frequently asked questions
What is the function of the 3RK1901-2NR10?
Its function is an AS-i flat cable transition to M12 — it provides a single M12 socket for connecting an AS-Interface device to the flat cable using an insulation-piercing method, without needing auxiliary power.
What does the note 'cable must not end in the feeder' mean?
It means the AS-i flat cable must pass through this branch and continue to the next device — the branch is a pass-through tap, not a termination point. The cable should not dead-end here.
How do I get current pricing and availability for 3RK1901-2NR10?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
3RK1901-2NR10