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Siemens 3SE3120-1E Heavy-Duty Metal Enclosure Endschalter (Reiseschalter)
Hochleistungsgrenzschalter SIRIUS 3SE3 mit Metallgehäuse, Ausgestattet mit 1NO+1NC-Sprungkontakten und Rollenhebelbetätigung. Schutzklasse IP67, Es ist für raue Industrieumgebungen geeignet.
Erklärung des Modellcodes
| Codesegment | Beschreibung |
| 3SE3 | Siemens SIRIUS series heavy-duty limit switch with metal enclosure |
| 120 | Grundmodell: 40mm wide housing, Pg13.5 cable gland, double-break snap-action contacts |
| -1E | Aktuator: Standard single roller lever, 1NO+1NC contact configuration |
Important Notice: Dieses Modell wurde eingestellt. The official replacement is 3SE5112-0CE01.
Technische Spezifikationen
| Artikel | Parameter | Bemerkungen |
| Kontaktkonfiguration | 1 Normalerweise geöffnet (NEIN) + 1 Normalerweise geschlossen (NC) | Double-break snap-action design |
| Nennstrom / Stromspannung | 10A / 500V und | AC-15: 2.5A / 400V |
| 10A / 600In DC | DC-13: 0.4A / 24V | |
| Betriebsmechanismus | Einzelrollenhebel | Mechanical life ≥ 10,000,000 Operationen |
| Gehäusematerial | Die-cast aluminium | Robust and impact-resistant |
| Schutz vor Eindringen | IP67 | Dust-tight and water-resistant; temporary immersion permitted |
| Cable Entry | Pg13.5 cable gland | Suitable for cables with outer diameter 9-14mm |
| Montageart | Surface mounting / DIN-Schienenmontage | Compatible with various mounting brackets |
| Umgebungstemperatur | -25°C ~ +80°C | Adaptable to harsh working conditions |
| Compliance-Standards | IEC 60947-5-1, IN 50041, VDE 0660 | Compliant with international industrial safety standards |
| Mechanisches Leben | ≥ 10,000,000 Operationen | Electrical life ≥ 100,000 operations under rated load |
Cross-Brand Replacement List (Direkter Ersatz)
| Marke | Modell | Kompatibilität | Referenzpreis (CNY) | Vorteile |
| Siemens (Ersatz) | 3SE5112-0CE01 | 100% | 450-550 | Official replacement, voll kompatibel |
| Schneider Electric | XCKN2118P16 | 95% | 380-480 | Identical contact configuration, IP67-zertifiziert |
| ABB | LS31P11 | 90% | 350-420 | Cost-effective with global warranty |
| Chint (Inländisch) | YBLX-ME/8108 | 90% | 120-180 | Competitive price, fast local delivery |
| Lecker (Inländisch) | LXK3-20S/T | 85% | 100-150 | Economical choice for bulk replacement |
Common Models of 3SE3 Series
- Standard Roller Lever (1NO+1NC)
| Modell | Actuator Description | Ersatzmodell |
| 3SE3120-1E | Einzelrollenhebel | 3SE5112-0CE01 |
| 3SE3120-1G | Dual roller lever | 3SE5112-0CE11 |
| 3SE3120-1H | Adjustable roller lever | 3SE5112-0CE21 |
- Other Actuator Types
| Modell | Actuator Description | Kontaktkonfiguration |
| 3SE3122-1E | Straight plunger | 1NO+1NC |
| 3SE3124-1E | Fork lever | 1NO+1NC |
| 3SE3126-1E | Adjustable fork lever | 1NO+1NC |
| 3SE3130-1E | Rotary lever | 1NO+1NC |
- Dual Contact Configuration (2NO+2NC)
| Modell | Actuator Description | Kontaktkonfiguration |
| 3SE3120-2E | Einzelrollenhebel | 2NO+2NC |
| 3SE3120-2G | Dual roller lever | 2NO+2NC |
Fehlerbehebung & Wartungshandbuch
- Häufige Fehler & Lösungen
| Fehlerphänomen | Mögliche Ursachen | Inspektionsschritte | Lösungen |
| Contacts fail to operate | 1. Jammed lever | 1. Check smooth mechanical movement | 1. Remove foreign matters and lubricate the shaft |
| 2. Damaged return spring | 2. Test spring reset force | 2. Replace the spring | |
| 3. Worn contacts | 3. Kontaktwiderstand messen | 3. Replace contact assembly | |
| Kontakt klemmt | 1. Overload operation | 1. Verify load against rated value | 1. Reduce load or select higher-capacity model |
| 2. Arc erosion | 2. Check contact surface for burn marks | 2. Kontakte austauschen | |
| 3. Übermäßige Staubansammlung | 3. Inspect sealing integrity | 3. Renew seals for better protection | |
| Unstable signal | 1. Lose Verkabelung | 1. Tighten terminal connections | 1. Retighten cables |
| 2. Oxidized contacts | 2. Kontaktwiderstand messen | 2. Clean contact surfaces | |
| 3. Excessive vibration | 3. Check mounting tightness | 3. Add vibration damping measures |
- Periodic Maintenance Schedule
| Wartungsartikel | Intervall | Betrieb |
| Visuelle Inspektion | Monatlich | Check housing damage and sealing condition |
| Mechanical Operation Test | Vierteljährlich | Manually actuate the lever to ensure smooth movement |
| Contact Performance Test | Halbjährlich | Kontaktwiderstand messen, ensure value ≤ 50mΩ |
| Reinigung & Schmierung | Jährlich | Remove internal dust; lubricate shafts with silicone grease |
| Seal Replacement | Jeder 2 Jahre | Replace cable glands and O-rings |
Anwendung & Branchenfälle
- Anwendbare Szenarien
Werkzeugmaschinen: Travel limit for worktables and position detection for cutting tools
Automatisierte Produktionslinien: Conveyor positioning and workpiece detection
Lifting Equipment: Travel limit protection and anti-collision detection
Verpackungsmaschinen: Position control for cutting & sealing and roll tension detection
Metallurgische Industrie: Position detection under high temperature (heat shield required)
- Non-Recommended Scenarios
Severely Corrosive Environments: Direct exposure to acid or alkaline solutions (stainless steel enclosure model recommended)
Explosive Hazardous Areas: Adopt explosion-proof limit switches of 3SE5 series
Hochpräzise Positionierung: For accuracy within ±0.1mm, proximity switches or encoders are preferred
- Anwendungsfälle
Fall 1: Automotive Stamping Production Line
Anwendung: Travel limit protection for stamping press slides
Lösung: Install 3SE3120-1E at upper and lower limit positions to cut off power when the slide reaches the limit
Ergebnis: Prevent equipment overload damage, improve operational safety; annual failure rate < 0.5%
Fall 2: Automated AS/RS Warehouse
Anwendung: Rail limit and cargo location detection for stackers
Lösung: Mount 3SE3120-1E at rail ends and cargo positions to realize precise positioning and safety protection
Ergebnis: Improve automation level, reduce manual intervention; positioning accuracy up to ±5mm
- 3SE3 series features metal housing and IP67 protection; 1E stands for single roller lever with 1NO+1NC contacts.
- Choose metal enclosure for heavy-duty use, and plastic enclosure (3SE5) for light-duty applications.
- For the discontinued model, use 3SE5112-0CE01 as direct replacement.
- Domestic alternatives from Chint and Delixi cut costs by half while retaining around 90% Leistung.
