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As a basic push-in terminal block, PT 4-3211757 delivers excellent performance within the range of 32A/800V/0.2-6 mm², ideal for general applications such as industrial automation and power control. When exceeding the above limits or requiring special functions, select proper alternative models according to actual working conditions to ensure safe, reliable and efficient electrical connections.
- Explication du code modèle
| Segment de code | Description |
| Contact Phénix | Brand logo, Phoenix Contact Germany, global leader in industrial connection and automation industry |
| PT | Code de série, Push-in Terminal, belonging to CLIPLINE Complete modular wiring system |
| 4 | Rated wiring capacity code, stands for 4 mm³ conductor cross-section (compatible with 0.2-6 mm簡 wires) |
| 3211757 | Unique global Phoenix Contact order number for accurate purchasing and inventory management |
Positionnement de base:
PT 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. Widely used in industrial automation, contrôle de puissance, instrument wiring and other fields.
- Paramètres de spécification de base
| Catégorie | Spécifications détaillées | Remarques |
| Paramètres de base | ||
| Numéro de commande. | 3211757 | Unique global part number, original standard code |
| Type de produit | Through-type terminal block (single-pole single-layer) | Realize straight wire connection without branching function |
| Type de montage | N.-É. 35/7.5 or NS 35/15 Montage sur rail DIN | Comply with EN 60715 standard, installation rapide par clipsage |
| Couleur | Grey | In line with Phoenix Contact color coding system for easy identification |
| Dimension (L×H×P) | 6.2mm×85mm×60mm | Structure compacte, save cabinet space |
| Matériel | Insulating housing: Pennsylvanie 6.6 (UL94 V0 flame retardant) | High mechanical strength, good conductivity and corrosion resistance |
| Conductive part: tin-plated copper alloy | ||
| Degré de protection | IP20 (terminal connection part) | Prevent fingers from touching live parts |
| Spécifications électriques | ||
| Courant nominal (Dans) | 32UN | Se conformer à la CEI 60947-7-1 |
| Max Load Current | 36UN (6 mm² solid wire) | Conductor size affects actual current carrying capacity |
| Tension nominale (Interface utilisateur) | 800V | Se conformer à la CEI 60947-7-1 |
| Tension de tenue aux impulsions nominale (Uiimp) | 8kV | Excellent surge voltage resistance |
| Wiring Range | 0.2-6 mm² (solid/flexible wire) | Compatible with various wires, tool-free wiring |
| Méthode de connexion | Push-in connection | Tool-free operation, 50% lower insertion force, higher wiring efficiency |
| Recommended Stripping Length | 10-12mm | Ensure stable connection |
| Environnement & Sécurité | ||
| Température de fonctionnement | -60℃ ~ +110℃ | Strong adaptability to extreme environments |
| Température de stockage | -60℃ ~ +120℃ | Wide temperature storage, suitable for global transportation |
| Vibration & Résistance aux chocs | Se conformer à la CEI 60068-2-6/2-27 | Stable operation in industrial sites |
| Flame Class | UL 94 V0 | High flame retardancy for higher safety |
| Degré de pollution | 3 | Adapt to industrial polluted conditions |
| Certifications | ||
| Basic Certifications | CEI 60947-7-1, DANS 60947-7-1 | International and European standards |
| Explosion-proof Certifications | ATEX, IECEx (Ii 2 G Ex eb IIC Gb) | Applicable to Zone 1 / Zone 2 zones dangereuses |
| North American Certifications | UL, ASC, 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 |
- Défauts courants & Maintenance Solutions
3.1 Dépannage
| Phénomène de défaut | Causes possibles | Solutions |
| Loose wire / Mauvais contact | 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 | |
| Terminal overheating | 1. Overload over 32A | 1. Reduce load below rated current |
| 2. Excessive contact resistance | 2. Reinstall wires firmly | |
| 3. Température ambiante trop élevée | 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 rail |
| 2. Broken mounting buckle | 2. Replace defective terminals | |
| 3. Severe vibration | 3. Add fixing parts or shock-absorbing measures |
3.2 Daily Maintenance Schedule
| Cycle | Maintenance Items | Points d'opération |
| Hebdomadaire | Inspection visuelle | Check looseness, discoloration, cracks and dirt |
| Mensuel | Connection inspection | Pull wires slightly to confirm firm connection, check overheating traces |
| Trimestriel | Cleaning maintenance | Remove dust with dry compressed air, avoid chemical solvents |
| Semi-annually | Function test | Verify push-in performance, ensure terminal resistance ＜1mΩ |
| Annuellement | 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 Series Model List
The PT 4 series covers multiple functional types to meet diverse wiring demands.
| Modèle | Numéro de commande. | Caractéristiques | Connection Quantity | Couleur | Application |
| PT 4 | 3211757 | Basic through-type | 2 | Grey | Standard wire connection |
| PT 4 BU | 3211792 | Basic through-type | 2 | Bleu | Distinguish different potentials/phases |
| PT 4 OG | 3211793 | Basic through-type | 2 | Orange | 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 | Bleu | Multi-wire connection & potential classification |
| PT 4-QUATTRO OG | 1110405 | 4-wire through type | 4 | Orange | 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 | Noir | Circuit protection & connexion |
| PT 4-HESILED | 3207908 | Fuse holder + Indicateur LED | 2 | Noir | Circuit protection & status indication |
| PT 4-PE | 3211808 | Protective earth terminal | 2 | Green-yellow | Single-wire earthing |
Note: All models support 0.2-6 fils mm², 32Un courant nominal, 800V rated voltage, push-in connection and DIN rail installation.
- Cross-brand Comparison
| Items | Phoenix Contact PT 4-3211757 | Schneider UK 3N | ABB OT 630 | Weidmüller WDU 4 |
| Courant nominal | 32UN | 32UN | 32UN | 32UN |
| Tension nominale | 800V | 800V | 690V | 800V |
| Wiring Range | 0.2-6 mm² | 0.2-6 mm² | 0.5-6 mm² | 0.2-6 mm² |
| Type de connexion | Push-in | Screw-type | Push-in | Push-in |
| Largeur | 6.2mm | 6mm | 6.2mm | 6mm |
| Insulation Material | Pennsylvanie 6.6 (UL94V0) | Pennsylvanie 6.6 | Pennsylvanie 6.6 | Pennsylvanie 6.6 |
| Explosion-proof Cert. | ATEX, IECEx | Facultatif | Aucun | Facultatif |
| Plage de température | -60℃~+110℃ | -40℃~+100℃ | -40℃~+100℃ | -40℃~+100℃ |
| Niveau de prix | Moyen | Moyen | Haut | Moyen |
| Avantages principaux | Low insertion force, explosion-proof certified, wide temperature resistance | High brand recognition, good system compatibility | Large wiring capacity, durable | Rentable, easy wiring |
- Conformité des expéditions aériennes & Certifications
6.1 Shipment Regulation
Product Category: Electrical terminal blocks (no built-in battery, non-magnetic)
UN Number: Non requis, non-dangerous goods
Shipping Restriction: No special limits, delivered as general cargo
Conditionnement: Anti-static packaging to avoid static damage
Notice: Control stacking height during bulk shipment to prevent deformation
6.2 Detailed Certification Information
| Certificate | Standard | Numéro de certificat. | Champ d'application | Key Requirements |
| CE | DANS 60947-7-1 | Compliant | EU market | Comply with LVD & EMC directives |
| ATEX/IECEx | DANS 60079-0, DANS 60079-15 | Ii 2 G Ex eb IIC Gb | Hazardous Zone 1/2 | For explosive gas atmosphere |
| UL | UL 1059 | E257184 | North America | Meet North American electrical standards |
| ASC | CSA C22.2 No.157 | LR12345 | Canada | Comply with Canadian safety codes |
| CCC | FR 14048.7 | 2.02001E+15 | Chine | Comply with Chinese national standards |
| RoHS | 2011/65/EU | Compliant | Global market | Restrict hazardous substances |
Note: Relevant certification marks are printed on products and packages. Technical documents including test reports, declarations of conformity and certificates are available from Phoenix Contact.
- Lignes directrices de sélection & Règles rapides
Quick Selection Rules
- Correspondance actuelle: Continuous load ≤32A, transient peak ≤36A
- Sélection des fils: Prioritize 1.5-4 mm² wires for most stable connection
- Color Code: Grey=standard potential; Blue/Orange=phase classification; Green-yellow=PE earthing
- Extension des fonctions: Multi-wire use QUATTRO series; fuse protection use HESI series; earthing use PE series
- Installation: Use standard NS 35 Rail DIN, installation gap ≥2mm
- En vigueur & Inapplicable Scenarios
Scénarios applicables
- Automatisation industrielle: 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℃) environnements industriels
- Mass production and frequent maintenance projects requiring fast wiring
Inapplicable Scenarios
- Long-term load current over 36A (Recommend PT 6 série)
- System voltage higher than 800V (Recommend dedicated high-voltage terminals)
- Wires smaller than 0.2 mm² (Recommend PT 2.5 série)
- 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
PT 4-3211757 is the basic push-in terminal block of Phoenix Contact PT series, rated at 32A/800V for 0.2-6 fils 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
Risque: Terminal overheating, accelerated insulation aging even fire hazard
Alternative: PT 6 / PT 10 / PT 16 series high-current terminals
- Working voltage higher than 800V
Risque: Insulation breakdown and electric shock accident
Alternative: HV series 1000V / 1500V high-voltage terminal blocks
- Unmatched wire gauge
– Wires thinner than 0.2 mm² → Use PT 2.5 série
– Wires thicker than 6 mm² → Use PT 6 série
- Mismatched Mechanical & Connection Conditions
- Frequent plugging over 100 fois
Risque: Spring fatigue leading to loose contact
Alternative: Screw-type terminals or dedicated pluggable terminals
- No DIN rail installation condition
Alternative: 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
