3998918

Name: Festo 3998918 Limit switch box SRBE-CA3-YR90-MW-22A-2W-C2N12-C1
Brand: Festo

Limit switch box SRBE-CA3-YR90-MW-22A-2W-C2N12-C1

The Festo 3998918 is an industrial component featuring a square design based on EN 60947-5-1 and ISO 5211 norms, operating with a contact-based toggle switch, double-pin switching element function via a mechanical/electrical proximity switch measuring principle. This RoHS-compliant unit holds SIL 3 safety integrity level certification, carries CE and UKCA markings per relevant EU and UK directives and electrical/RoHS instructions, and is certified for explosive atmospheres including Class I/II/III, Div. 1 (US/CA), Zone 1 and 21 (US/CA), with AEx/Ex d IIB T5 Gb gas and AEx/Ex tb IIIC T108°C Db dust ignition protection issued by CSA 263311 and Eurocert. SIL202587141 across an ambient temperature range of -20 °C to 60 °C. Submit the exact part number, quantity, and application requirements to request a quote for this component.

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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.

Manufacturer: Festo
Part number: 3998918
Data verification: Manufacturer evidence reviewed

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Technical Specifications

Design: Square
Based on norm: EN 60947-5-1 | ISO 5211
CE marking (see declaration of conformity): As per EU low voltage directive | As per EU RoHS directive
UKCA marking (see declaration of conformity): To UK RoHS instructions | To UK instructions for electrical equipment
Explosion prevention and protection: Class I, Div. 1 (CA) | Class I, Div. 1 (US) | Class II, Div. 1 (CA) | Class II, Div. 1 (US) | Zone 1 (CA) | Zone 1 (US) | Zone 21 (CA) | Zone 21 (US)
Type of ignition protection for gas: AEx d IIB T5 Gb | Ex d IIB T5 Gb
Type of (ignition) protection for dust: AEx tb IIIC T108°C Db | Ex tb IIIC T108°C Db
Explosion protection certication outside the EU: Class I, Div. 1 (CA) | Class I, Div. 1 (US) | Class II, Div. 1 (CA) | Class II, Div. 1 (US) | Class III (CA) | Class III (US) | EPL Db (CA) | EPL Db (US) | EPL Gb (CA) | EPL Gb (US)
Certicate issuing authority: CSA 263311 | Eurocert. SIL202587141
Note on materials: RoHS compliant
Safety integrity level (SIL): SIL 3
Measuring principle: Mechanical/electrical | Via proximity switch
Ambient temperature: -20 °C...60 °C
Switching output: Contact-based
Switching element function: Toggle switch, double-pin

Engineering context

Identification and RFQ Guidance

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Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against Festo 3998918. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.