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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.
- Пояснение кода модели
| Сегмент кода | Описание |
| Феникс Контакт | Brand logo, Phoenix Contact Germany, global leader in industrial connection and automation industry |
| PT | Код серии, 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 |
Основное позиционирование:
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, power control, instrument wiring and other fields.
- Основные параметры спецификации
| Категория | Подробные характеристики | Примечания |
| Основные параметры | ||
| Номер заказа. | 3211757 | Unique global part number, original standard code |
| Тип продукта | Through-type terminal block (single-pole single-layer) | Realize straight wire connection without branching function |
| Тип монтажа | НС 35/7.5 or NS 35/15 Монтаж на DIN-рейку | Соответствует EN 60715 стандартный, quick snap-on installation |
| Цвет | Серый | In line with Phoenix Contact color coding system for easy identification |
| Измерение (Ш×В×Г) | 6.2mm×85mm×60mm | Компактная структура, save cabinet space |
| Материал | Insulating housing: PA 6.6 (UL94 V0 flame retardant) | High mechanical strength, good conductivity and corrosion resistance |
| Conductive part: tin-plated copper alloy | ||
| Степень защиты | IP20 (terminal connection part) | Prevent fingers from touching live parts |
| Электрические характеристики | ||
| Номинальный ток (В) | 32А | Соответствует МЭК 60947-7-1 |
| Max Load Current | 36А (6 mm² solid wire) | Conductor size affects actual current carrying capacity |
| Номинальное напряжение (Уи) | 800В | Соответствует МЭК 60947-7-1 |
| Номинальное импульсное выдерживаемое напряжение (Uiimp) | 8кВ | Excellent surge voltage resistance |
| Wiring Range | 0.2-6 мм² (solid/flexible wire) | Compatible with various wires, tool-free wiring |
| Способ подключения | Push-in connection | Tool-free operation, 50% lower insertion force, higher wiring efficiency |
| Recommended Stripping Length | 10-12мм | Ensure stable connection |
| Среда & Безопасность | ||
| Рабочая температура | -60℃ ~ +110℃ | Strong adaptability to extreme environments |
| Температура хранения | -60℃ ~ +120℃ | Wide temperature storage, suitable for global transportation |
| Vibration & Ударная устойчивость | Соответствует МЭК 60068-2-6/2-27 | Stable operation in industrial sites |
| Flame Class | UL 94 V0 | High flame retardancy for higher safety |
| Степень загрязнения | 3 | Adapt to industrial polluted conditions |
| Сертификаты | ||
| Basic Certifications | МЭК 60947-7-1, В 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 hazardous areas |
| North American Certifications | UL, CSA, cULus | Meet North American electrical safety standards |
| Chinese Certification | CCC | Comply with national standards of China |
| Другие сертификаты | EAC Ex, РоХС | Eurasian Union certification & соблюдение экологических требований |
- Распространенные неисправности & Maintenance Solutions
3.1 Поиск неисправностей
| Явление неисправности | Возможные причины | Решения |
| Loose wire / Плохой контакт | 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 | |
| Перегрев терминала | 1. Overload over 32A | 1. Reduce load below rated current |
| 2. Excessive contact resistance | 2. Reinstall wires firmly | |
| 3. Слишком высокая температура окружающей среды | 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. Механические повреждения | 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 рельс |
| 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 | Operation Points |
| Weekly | Визуальный осмотр | Check looseness, discoloration, cracks and dirt |
| Ежемесячно | Connection inspection | Pull wires slightly to confirm firm connection, check overheating traces |
| Ежеквартальный | Cleaning maintenance | Remove dust with dry compressed air, avoid chemical solvents |
| Semi-annually | Функциональный тест | Verify push-in performance, ensure terminal resistance ＜1mΩ |
| Ежегодно | 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 Список моделей серий
The PT 4 series covers multiple functional types to meet diverse wiring demands.
| Модель | Номер заказа. | Функции | Connection Quantity | Цвет | Приложение |
| PT 4 | 3211757 | Basic through-type | 2 | Серый | Standard wire connection |
| PT 4 BU | 3211792 | Basic through-type | 2 | Синий | 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 | Серый | Multi-wire parallel connection |
| PT 4-QUATTRO BU | 3211802 | 4-wire through type | 4 | Синий | 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 | Черный | Circuit protection & связь |
| PT 4-HESILED | 3207908 | Fuse holder + Светодиодный индикатор | 2 | Черный | Circuit protection & status indication |
| PT 4-PE | 3211808 | Protective earth terminal | 2 | Green-yellow | Single-wire earthing |
Примечание: All models support 0.2-6 mm² wires, 32Номинальный ток, 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 |
| Номинальный ток | 32А | 32А | 32А | 32А |
| Номинальное напряжение | 800В | 800В | 690В | 800В |
| Wiring Range | 0.2-6 мм² | 0.2-6 мм² | 0.5-6 мм² | 0.2-6 мм² |
| Тип подключения | Push-in | Screw-type | Push-in | Push-in |
| Ширина | 6.2мм | 6мм | 6.2мм | 6мм |
| Изоляционный материал | PA 6.6 (UL94 V0) | PA 6.6 | PA 6.6 | PA 6.6 |
| Explosion-proof Cert. | ATEX, IECEx | Необязательный | Никто | Необязательный |
| Температурный диапазон | -60℃~+110℃ | -40℃~+100℃ | -40℃~+100℃ | -40℃~+100℃ |
| Уровень цен | Середина | Середина | Высокий | Середина |
| Основные преимущества | Low insertion force, explosion-proof certified, wide temperature resistance | High brand recognition, good system compatibility | Large wiring capacity, прочный | Экономически эффективный, easy wiring |
- Air Shipment Compliance & Сертификаты
6.1 Shipment Regulation
Категория продукта: Electrical terminal blocks (no built-in battery, non-magnetic)
UN Number: Not required, non-dangerous goods
Shipping Restriction: No special limits, delivered as general cargo
Упаковка: Anti-static packaging to avoid static damage
Notice: Control stacking height during bulk shipment to prevent deformation
6.2 Detailed Certification Information
| Certificate | Стандартный | Certificate No. | Область применения | Key Requirements |
| CE | В 60947-7-1 | Compliant | EU market | Comply with LVD & EMC directives |
| ATEX/IECEx | В 60079-0, В 60079-15 | II 2 G Ex eb IIC Gb | Hazardous Zone 1/2 | For explosive gas atmosphere |
| UL | UL 1059 | E257184 | Северная Америка | Meet North American electrical standards |
| CSA | CSA C22.2 No.157 | LR12345 | Канада | Comply with Canadian safety codes |
| CCC | ГБ 14048.7 | 2.02001E+15 | Китай | Comply with Chinese national standards |
| РоХС | 2011/65/Евросоюз | Compliant | Global market | Restrict hazardous substances |
Примечание: Relevant certification marks are printed on products and packages. Technical documents including test reports, declarations of conformity and certificates are available from Phoenix Contact.
- Рекомендации по выбору & Quick Rules
Quick Selection Rules
- Текущее соответствие: Continuous load ≤32A, transient peak ≤36A
- Wire Selection: Prioritize 1.5-4 mm² wires for most stable connection
- Color Code: Grey=standard potential; Blue/Orange=phase classification; Green-yellow=PE earthing
- Расширение функций: Multi-wire use QUATTRO series; fuse protection use HESI series; earthing use PE series
- Установка: Use standard NS 35 DIN-рейка, installation gap ≥2mm
- Применимый & Inapplicable Scenarios
Применимые сценарии
- Промышленная автоматизация: 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℃) industrial environments
- Mass production and frequent maintenance projects requiring fast wiring
Inapplicable Scenarios
- Long-term load current over 36A (Recommend PT 6 ряд)
- System voltage higher than 800V (Recommend dedicated high-voltage terminals)
- Wires smaller than 0.2 мм² (Recommend PT 2.5 ряд)
- 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 mm² wires. 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
Риск: Перегрев терминала, accelerated insulation aging even fire hazard
Альтернатива: PT 6 / PT 10 / PT 16 series high-current terminals
- Working voltage higher than 800V
Риск: Insulation breakdown and electric shock accident
Альтернатива: HV series 1000V / 1500V high-voltage terminal blocks
- Unmatched wire gauge
– Wires thinner than 0.2 mm² → Use PT 2.5 ряд
– Wires thicker than 6 mm² → Use PT 6 ряд
- Mismatched Mechanical & Connection Conditions
- Frequent plugging over 100 раз
Риск: Spring fatigue leading to loose contact
Альтернатива: Screw-type terminals or dedicated pluggable terminals
- No DIN rail installation condition
Альтернатива: 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
