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Siemens 3SE3120-1J — Limit Switches

Siemens 3SE3120-1J Position Switch, Roller Crank, IP67

MPN3SE3120-1J

Siemens 3SE3 series, Position Switch Body, order code 3SE3120-1J, roller crank actuator, IP67, 6 A / 230 V AC, 1 NO + 1 NC snap-action contacts, M20 x 1.5 cable entry.

$35.00Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3SE3120-1J — Specifications
ParameterValue
TypePosition Switch Body
Model3SE3120-1J
Weight0.308 Kg
ConditionUsed
Shelf no.200705
ConnectionM20 x 1.5 Cable entry
Dimensions40 x 37.5 x 100 mm
ActuationRoller Crank
IP ratingIP67
Contact operationSnap action
Contact current max.6 A
Output configuration1 Normally open + 1 Normally closed
Switching voltage max.230 V AC

Product details

The Siemens 3SE3120-1J is a position switch body from the 3SE3 series, built for end-of-travel and presence detection on automated machinery. Its roller crank actuator gives it a mechanical overtravel characteristic suited to cam-operated linear or rotary motion — think conveyor diverters, transfer slides, or pallet stops where the cam ramp sweeps past the roller without binding the stem. The IP67 seal keeps out coolant splash and airborne dust on machining centres or washdown zones; the M20 x 1.5 cable entry accepts standard metric gland sizes for panel or junction-box termination.

The 40 x 37.5 x 100 mm body mounts via the two slotted holes in the switch base — no DIN-rail adapter on this variant, so plan for direct panel or bracket fixing. Roller crank orientation is field-adjustable in 90° increments around the actuator axis, letting you align the roller plane with the cam path without shimming the mounting plate.

Frequently asked questions

What is the closest alternative to 3SE3120-1J?

Within the 3SE3 family, the primary difference between variants is the actuator head style. The 3SE3120-1J uses a roller crank; other order codes in the same body size offer plunger, roller plunger, or lever actuators. No pin-compatible drop-in with a different actuator exists — the actuator is integral to the switch head. If the roller crank geometry fits your cam profile, this is the correct part.

Where can I buy 3SE3120-1J?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ and we will source it against your required quantity and delivery window.

What compliance documentation does Siemens provide for 3SE3120-1J?

Siemens typically supplies a CE declaration of conformity and a manufacturer's declaration for the 3SE3 series. RoHS and REACH compliance statements are included in the product documentation bundle. Specific UL or IEC certification files are available on request from the manufacturer's support portal.

MPN
3SE3120-1J