ST 2.5 QUATTRO Series Spring Terminal Block Supplier
United Machinery is a trusted supplier of the Phoenix Contact ST 2.5 QUATTRO Series Spring Terminal Blocks across West Bengal, Bihar, Odisha, Chhattisgarh, Jharkhand, Maharashtra, Rajasthan, Haryana, Madhya Pradesh, Gujarat, Assam, Tripura, Andhra Pradesh, Meghalaya, Karnataka, Manipur, Tamil Nadu, Hyderabad and also Saudi Arabia and UAE, delivering high-performance wiring solutions for control panels, automation systems, and industrial electrical networks. With efficient logistics and technical expertise, we support industries across India and the Middle East.
Product Description
The Phoenix Contact ST 2.5 QUATTRO Spring Terminal Block is designed for modern industrial wiring where reliability, compactness, and fast installation are essential. Featuring four conductor connections in a single compact housing, this terminal block offers space-saving installation without compromising performance. With spring-cage connection technology, the ST 2.5 QUATTRO (3031306) ensures vibration-resistant, gas-tight, maintenance-free terminations — ideal for demanding industrial environments. Its modular structure integrates seamlessly with Phoenix Contact accessories such as marking labels, test adapters, and bridging solutions.
Variant of ST 2.5 QUATTRO are:
Model | Part No. |
ST 2.5-QUATTRO-PE | 3031322 |
ST 2.5-QUATTRO-U | 3031636 |
ST 2.5-QUATTRO BU | 3031319 |
Phoenix Contact 3031322 ST 2.5-QUATTRO-PE Series – Green/Yellow, 2.5mm², Single-Level, Spring Cage Termination, ATEX, EAC
Protective conductor terminal block, number of connections: 4, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 – 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: green-yellow
Phoenix Contact 3031636 ST 2.5-QUATTRO-U Series – Grey, Single-Level, Spring Clamp Termination
Feed-through terminal block, nom. voltage: 800 V, nominal current: 22 A, number of connections: 4, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 – 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: gray
Phoenix Contact 3031319 ST B2.5-QUATTRO BU Series – Blue, 2.5mm² —
Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 4, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 – 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: blue
Technical Highlights
Parameter | Specification |
Model Series | ST 2.5 QUATTRO |
Connection Type | Spring Cage Clamp |
Number of Terminations | 4-wire connection in one block |
Rated Cross Section | 2.5 mm² |
Voltage Rating | Up to 800V (Varies by model) |
Current Capacity | 24 A (approx.) |
Conductor Size Range | 0.5 mm² – 4 mm² |
Mounting Type | DIN Rail (NS35) |
Material | Flame-retardant, UL-approved insulating body |
Compatible Accessories | Marking strips, end covers, bridges, test sockets |
Reasons to Choose ST 2.5 QUATTRO Series
- Space-Saving Four-Point Terminal Design:Ideal for dense wiring applications without expanding panel size.
- Maintenance-Free Spring Technology:Eliminates retightening and ensures secure contact over years of operation.
- Fast and Tool-Free Wiring:Simply insert the conductor — perfect for high-volume installations.
- Vibration-Safe Connections:Reliable in heavy machinery, railways, automotive plants, and industrial automation.
- Universal Compatibility:Works seamlessly with other Phoenix Contact CLIPLINE terminal accessories.
- High Durability & Safety:Tested for temperature, corrosion, electrical stress, and harsh environmental conditions.
Best Suited Applications
The ST 2.5 QUATTRO Spring Terminal Block is widely used in:
- Industrial Control Panels & OEM Machines
- PLC Wiring and I/O Termination
- Building Automation and BMS Panels
- Power Distribution Boards
- Drive Control Systems and Motor Control Centers
- Renewable Energy, Solar & Wind Electrical Panels
- Railway and Metro Control Systems
- Automation, SCADA, and Instrumentation Systems
Ø Service Locations
- West Bengal
- Bihar
- Odisha
- Chhattisgarh
- Jharkhand:Ranchi
- Maharashtra:Mumbai, Pune, Nagpur, Aurangabad
- Rajasthan:Jaipur
- Haryana:Faridabad
- Madhya Pradesh:Bhopal, Indore
- Gujarat:Ahmedabad, Surat, Vadodara
- Assam
- Tripura:Agartala
- Andhra Pradesh:Visakhapatnam
- Meghalaya
- Karnataka:Bengaluru
- Manipur:Imphal
- Tamil Nadu:Chennai, Coimbatore
- Hyderabad
- International Supply:
- Saudi Arabia:Al Jubail, Jeddah, Riyadh, Al Khobar
- UAE:Abu Dhabi, Dubai, Ruwais, Umm Al Quwain
Why Choose United Machinery as Your Supplier?
- Genuine Phoenix Contact Products
- Bulk Stock Availability for Projects & AMC Requirements
- Technical Selection Assistance & Documentation Support
- Pan-India & GCC Supply Network
- Competitive Price and On-time Delivery
- Reliable Partner for OEMs, EPCs, and Panel Builders
Contact Us
For premium-quality ST 2.5 QUATRO Series Spring Terminal Blocks and reliable supply support, get in touch with United Machinery Corporation today.
We supply across India, UAE, and Saudi Arabia, including West Bengal, Bihar, Odisha, Maharashtra, Gujarat, Rajasthan, Riyadh, Jeddah, Dubai, Abu Dhabi, Al Jubail, Al Khobar, and more.
Phone Number – +91 90732 37992
Email Id – onlineumc9@gmail.com
Reach out for product enquiries, pricing, bulk orders, or technical assistance.
Our team ensures quick response, genuine products, and timely delivery.
Contact us now to discuss your requirements and get the best supply solutions.
