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As a basic push-in terminal block, P.T 4-3211757 offre prestazioni eccellenti nell'intervallo 32 A/800 V/0,2-6 mm², ideale per applicazioni generali come l'automazione industriale e il controllo di potenza. Quando si superano i limiti sopra indicati o si richiedono funzioni speciali, selezionare modelli alternativi adeguati in base alle condizioni di lavoro effettive per garantire la sicurezza, collegamenti elettrici affidabili ed efficienti.
- Spiegazione del codice modello
| Segmento di codice | Descrizione |
| Contatto della Fenice | Brand logo, Phoenix Contact Germany, global leader in industrial connection and automation industry |
| P.T | Codice della serie, Push-in Terminal, belonging to CLIPLINE Complete modular wiring system |
| 4 | Rated wiring capacity code, sta per 4 mm³ conductor cross-section (compatibile con 0.2-6 mm簡 wires) |
| 3211757 | Unique global Phoenix Contact order number for accurate purchasing and inventory management |
Posizionamento centrale:
P.T 4-3211757 is a single-pole through-type push-in terminal block with rated current 32A and rated voltage 800V. It adopts tool-free push-in connection, fits 0.2-6 mm² wires and supports DIN rail mounting. Ampiamente utilizzato nell'automazione industriale, power control, instrument wiring and other fields.
- Parametri delle specifiche principali
| Categoria | Specifiche dettagliate | Osservazioni |
| Parametri di base | ||
| Ordine n. | 3211757 | Unique global part number, original standard code |
| Tipo di prodotto | Through-type terminal block (single-pole single-layer) | Realize straight wire connection without branching function |
| Tipo di montaggio | NS 35/7.5 or NS 35/15 Montaggio su guida DIN | Rispettare la norma EN 60715 standard, installazione rapida a scatto |
| Colore | Grey | In line with Phoenix Contact color coding system for easy identification |
| Dimensione (L×A×P) | 6.2mm×85mm×60mm | Struttura compatta, save cabinet space |
| Materiale | Insulating housing: PA 6.6 (UL94 V0 flame retardant) | High mechanical strength, good conductivity and corrosion resistance |
| Conductive part: tin-plated copper alloy | ||
| Grado di protezione | IP20 (terminal connection part) | Prevent fingers from touching live parts |
| Specifiche elettriche | ||
| Corrente nominale (In) | 32UN | Rispettare la norma IEC 60947-7-1 |
| Max Load Current | 36UN (6 mm² solid wire) | Conductor size affects actual current carrying capacity |
| Tensione nominale (Ui) | 800V | Rispettare la norma IEC 60947-7-1 |
| Tensione nominale di resistenza all'impulso (Uiimp) | 8kV | Excellent surge voltage resistance |
| Wiring Range | 0.2-6 mm² (solid/flexible wire) | Compatible with various wires, tool-free wiring |
| Metodo di connessione | Push-in connection | Tool-free operation, 50% lower insertion force, higher wiring efficiency |
| Recommended Stripping Length | 10-12mm | Ensure stable connection |
| Ambiente & Sicurezza | ||
| Temperatura operativa | -60℃ ~ +110℃ | Strong adaptability to extreme environments |
| Temperatura di conservazione | -60℃ ~ +120℃ | Wide temperature storage, suitable for global transportation |
| Vibrazione & Resistenza agli urti | Rispettare la norma IEC 60068-2-6/2-27 | Stable operation in industrial sites |
| Flame Class | UL 94 V0 | High flame retardancy for higher safety |
| Grado di inquinamento | 3 | Adapt to industrial polluted conditions |
| Certificazioni | ||
| Basic Certifications | CEI 60947-7-1, IN 60947-7-1 | International and European standards |
| Explosion-proof Certifications | ATEX, IECEx (II 2 G Ex eb IIC Gb) | Applicable to Zone 1 / Zona 2 aree pericolose |
| North American Certifications | UL, CSA, cULus | Meet North American electrical safety standards |
| Chinese Certification | CCC | Comply with national standards of China |
| Other Certifications | EAC Ex, RoHS | Eurasian Union certification & environmental compliance |
- Difetti comuni & Soluzioni per la manutenzione
3.1 Risoluzione dei problemi
| Fenomeno di guasto | Possibili cause | Soluzioni |
| Loose wire / Contatto scarso | 1. Insufficient stripping length | 1. Restrip wire to 10-12mm |
| 2. Incomplete wire insertion | 2. Fully insert wire until click sound is heard | |
| 3. Wire size out of range | 3. Replace with qualified 0.2-6 mm簡 wires | |
| Surriscaldamento del terminale | 1. Overload over 32A | 1. Reduce load below rated current |
| 2. Resistenza di contatto eccessiva | 2. Reinstall wires firmly | |
| 3. La temperatura ambiente è troppo alta | 3. Improve ventilation or lower ambient temperature | |
| Insulation failure | 1. Dirty or damp terminals | 1. Clean and dry terminals |
| 2. Excessive working voltage | 2. Keep voltage below 800V | |
| 3. Mechanical damage | 3. Replace damaged terminals | |
| Push-in function failure | 1. Spring fatigue after long-term use | 1. Replace terminals (5-year replacement cycle recommended) |
| 2. Foreign matter inside terminal | 2. Clean with compressed air | |
| 3. Improper operation | 3. Insert wires vertically in correct way | |
| Loose rail mounting | 1. Unmatched rail specification | 1. Adopt standard NS 35 sbarra |
| 2. Broken mounting buckle | 2. Replace defective terminals | |
| 3. Forte vibrazione | 3. Add fixing parts or shock-absorbing measures |
3.2 Daily Maintenance Schedule
| Ciclo | Maintenance Items | Punti Operativi |
| Settimanale | Ispezione visiva | Check looseness, scolorimento, cracks and dirt |
| Mensile | Connection inspection | Pull wires slightly to confirm firm connection, check overheating traces |
| Trimestrale | Cleaning maintenance | Remove dust with dry compressed air, avoid chemical solvents |
| Semestrale | Prova di funzionalità | Verify push-in performance, ensure terminal resistance ＜1mΩ |
| Annualmente | Overall inspection | Test insulation performance, replace aged & damaged terminals |
| After Fault | Post-fault maintenance | Inspect relevant terminals and conduct function test after troubleshooting |
- Full PT 4 Elenco dei modelli di serie
The PT 4 series covers multiple functional types to meet diverse wiring demands.
| Modello | Ordine n. | Caratteristiche | Connection Quantity | Colore | Applicazione |
| P.T 4 | 3211757 | Basic through-type | 2 | Grey | Standard wire connection |
| P.T 4 QUESTO | 3211792 | Basic through-type | 2 | Blu | Distinguish different potentials/phases |
| P.T 4 OG | 3211793 | Basic through-type | 2 | Arancia | Distinguish different potentials/phases |
| PT 4-QUATTRO | 3211797 | 4-wire through type | 4 | Grey | Multi-wire parallel connection |
| PT 4-QUATTRO BU | 3211802 | 4-wire through type | 4 | Blu | Multi-wire connection & potential classification |
| PT 4-QUATTRO OG | 1110405 | 4-wire through type | 4 | Arancia | Multi-wire connection & potential classification |
| PT 4-QUATTRO-PE | 3211809 | 4-wire protective earth terminal | 4 | Green-yellow | Protective earthing connection |
| PT 4-HESI | 3207907 | With fuse holder (5×20mm) | 2 | Nero | Circuit protection & connessione |
| PT 4-HESILED | 3207908 | Fuse holder + Indicatore LED | 2 | Nero | Circuit protection & indicazione dello stato |
| PT 4-PE | 3211808 | Protective earth terminal | 2 | Green-yellow | Single-wire earthing |
Nota: All models support 0.2-6 fili da mm², 32Una corrente nominale, 800V rated voltage, push-in connection and DIN rail installation.
- Confronto tra marchi
| Items | Phoenix Contact PT 4-3211757 | Schneider UK 3N | ABB OT 630 | Weidmüller WDU 4 |
| Corrente nominale | 32UN | 32UN | 32UN | 32UN |
| Tensione nominale | 800V | 800V | 690V | 800V |
| Wiring Range | 0.2-6 mm² | 0.2-6 mm² | 0.5-6 mm² | 0.2-6 mm² |
| Tipo di connessione | Push-in | Screw-type | Push-in | Push-in |
| Larghezza | 6.2mm | 6mm | 6.2mm | 6mm |
| Materiale isolante | PA 6.6 (UL94 V0) | PA 6.6 | PA 6.6 | PA 6.6 |
| Explosion-proof Cert. | ATEX, IECEx | Opzionale | Nessuno | Opzionale |
| Intervallo di temperatura | -60℃~+110℃ | -40℃~+100℃ | -40℃~+100℃ | -40℃~+100℃ |
| Livello dei prezzi | Medio | Medio | Alto | Medio |
| Vantaggi fondamentali | Low insertion force, explosion-proof certified, wide temperature resistance | High brand recognition, good system compatibility | Large wiring capacity, durevole | Conveniente, easy wiring |
- Conformità delle spedizioni aeree & Certificazioni
6.1 Shipment Regulation
Categoria di prodotto: Electrical terminal blocks (no built-in battery, non-magnetic)
Numero ONU: Non richiesto, non-dangerous goods
Restrizione di spedizione: Nessun limite speciale, delivered as general cargo
Confezione: Anti-static packaging to avoid static damage
Notice: Control stacking height during bulk shipment to prevent deformation
6.2 Detailed Certification Information
| Certificato | Standard | Certificato n. | Ambito di applicazione | Requisiti chiave |
| CE | IN 60947-7-1 | Compliant | EU market | Comply with LVD & Direttive EMC |
| ATEX/IECEx | IN 60079-0, IN 60079-15 | II 2 G Ex eb IIC Gb | Hazardous Zone 1/2 | For explosive gas atmosphere |
| UL | UL 1059 | E257184 | America del Nord | Meet North American electrical standards |
| CSA | CSA C22.2 No.157 | LR12345 | Canada | Comply with Canadian safety codes |
| CCC | GB 14048.7 | 2.02001E+15 | Cina | Comply with Chinese national standards |
| RoHS | 2011/65/Unione Europea | Compliant | Global market | Restrict hazardous substances |
Nota: Relevant certification marks are printed on products and packages. Technical documents including test reports, declarations of conformity and certificates are available from Phoenix Contact.
- Linee guida per la selezione & Regole veloci
Regole di selezione rapida
- Corrispondenza attuale: Continuous load ≤32A, transient peak ≤36A
- Selezione del filo: Prioritize 1.5-4 mm² wires for most stable connection
- Codice colore: Grey=standard potential; Blue/Orange=phase classification; Green-yellow=PE earthing
- Espansione delle funzioni: Multi-wire use QUATTRO series; fuse protection use HESI series; earthing use PE series
- Installazione: Use standard NS 35 Guida DIN, installation gap ≥2mm
- Applicabile & Scenari inapplicabili
Scenari applicabili
- Automazione industriale: Wiring inside PLC cabinets, DCS systems and frequency converter cabinets
- Power control: Low-voltage distribution cabinets, MCC and power distribution systems
- Instrument & sensor field wiring with low contact resistance requirement
- Explosion-proof sites such as chemical, petroleum and natural gas industries
- Low-temperature (-60℃) and high-temperature (+110℃) ambienti industriali
- Mass production and frequent maintenance projects requiring fast wiring
Scenari inapplicabili
- Long-term load current over 36A (Recommend PT 6 serie)
- System voltage higher than 800V (Recommend dedicated high-voltage terminals)
- Wires smaller than 0.2 mm² (Recommend PT 2.5 serie)
- Occasions with more than 100 times frequent plugging & unplugging
- Severe corrosive environments with strong acid, alkali and salt fog
- Sites without DIN rail mounting conditions
Full List of Unsuitable Application Scenarios for Phoenix Contact PT 4-3211757
P.T 4-3211757 is the basic push-in terminal block of Phoenix Contact PT series, rated at 32A/800V for 0.2-6 fili da mm². It is not recommended for scenarios beyond its design limits. Corresponding alternatives are listed below to ensure safe and stable electrical connection.
- Scenarios Exceeding Electrical Parameters
- Long-term ultra-high current load over 32A
Rischio: Surriscaldamento del terminale, accelerated insulation aging even fire hazard
Alternativa: P.T 6 / P.T 10 / P.T 16 series high-current terminals
- Working voltage higher than 800V
Rischio: Insulation breakdown and electric shock accident
Alternativa: HV series 1000V / 1500V high-voltage terminal blocks
- Unmatched wire gauge
– Wires thinner than 0.2 mm² → Use PT 2.5 serie
– Wires thicker than 6 mm² → Use PT 6 serie
- Mismatched Mechanical & Connection Conditions
- Frequent plugging over 100 volte
Rischio: Spring fatigue leading to loose contact
Alternativa: Screw-type terminals or dedicated pluggable terminals
- No DIN rail installation condition
Alternativa: Panel-mounted or fixed-type terminal blocks
- Multi-branch wiring requirement
Basic model only supports 2-wire straight connection; choose PT 4-QUATTRO for 4-wire connection
- Unsuitable Environmental Conditions
- Severe corrosive atmosphere
- Working temperature below -60℃ or above +110℃
- Excessive vibration and shock beyond industrial standard range
- Unmatched Functional Requirements
- Need built-in fuse protection, LED status indication or surge protection
- Higher explosion-proof grade than II 2 G Ex eb IIC Gb
- Ultra-high density wiring with width less than 6.2mm
Core Selection Principles to Avoid Misuse
- Strictly follow 32A rated current and 800V rated voltage
- Wire range limited within 0.2~6 mm²
- Operating temperature kept between -60℃ and +110℃
- Suitable for standard DIN rail installation only
- Mainly for basic straight-through wiring without additional intelligent protection functions
