Euchner GSBF02R12-502-MC1806 Multiple Limit Switch: Comprehensive Technical Guide
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What is the Euchner GSBF02R12-502-MC1806?
The GSBF02R12-502-MC1806 is an Euchner safety interlock switch — the tongue-operated guard switch that proves a machine door is closed and locked before the control system is allowed to run. The identification sits in two places: the carton label reads EUCHNER GSBF02R12-502-MC1806, 089529, 3.GK, 70771 Leinfelden — Euchner's Leinfelden-Echterdingen address under the "More than safety." strapline — and the switch's own stainless cover label carries the full rating block: ID-NR.: 094147, 3.ME.002124, IP 67, AC-15 6A 230V, DC-13 6A 24V. The build matches the rating: a black glass-filled housing over the stainless cover, an oval tongue entry with a moulded gasket, mounting lugs on both sides, a spring-wire locking pin pair, and an emergency release knob engraved ALLEN KEY (5 mm) on the end face. This record covers six identical switches, each in its own Euchner box — intake recorded 28 November 2025, record weight 0.5 kg, the record noting imported components with domestic assembly (进口部件， 国内生产). Thirteen photos and an inspection video document the lot.
Part details
| Field | Value |
|---|---|
| Brand | Euchner — "More than safety.", 70771 Leinfelden, www.euchner.com |
| Model | GSBF02R12-502-MC1806 tongue-operated safety interlock switch |
| Identification | ID-NR.: 094147 (unit label); ordering number 089529, 3.GK (box label) |
| Contact rating | AC-15 6A 230V / DC-13 6A 24V (label figures) |
| Ingress protection | IP 67 |
| Construction | Stainless cover over black housing, oval tongue entry with gasket, side mounting lugs, spring locking-pin pair, 5 mm ALLEN KEY emergency release, blanked M20 conduit port |
| Quality mark | QC 804 date sticker on each housing |
| Lot | 6 switches, each boxed; intake 2025-11-28, record weight 0.5 kg |
Values are read from the carton label, the unit label and the photographed construction; the record's origin remark is quoted as recorded.
Where this switch sits on a guard door
A tongue interlock does one job reliably: the key-shaped tongue on the gate enters the oval head only when the door is fully shut, and only then do the positive-opening contacts close — and on this series the locking pins hold the tongue in until the control system releases them, which is what separates a safety switch from a plain limit switch. The 6 A ratings mean the contacts can drive a contactor coil or feed a safety relay directly without an interposing relay, on either an AC 230 V or a DC 24 V circuit, and the IP 67 gasketed head keeps washdown areas and dusty cells out of the contact chamber. The engraved ALLEN KEY release is the service provision: when a door must be opened with the machine in a defined safe state and no power on the lock, a 5 mm key operates the internal release.
The six units here are one batch — every housing carries the same QC 804 date sticker, every box the same 089529 label — photographed individually, in pairs, and as the full set of six. For a machine rebuild or a multi-door cell, a same-batch six-pack keeps the safety circuits electrically identical across every guard position.
Photos and video
All images below are original KOEED warehouse photos. Click any photo to view it full size.
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