WAGO 280-104 Through Terminal Block | TOPJOB S Series
The WAGO 280-104 is a high-density, screw-free through terminal block from WAGO’s proven TOPJOB S series — engineered for industrial control panels, machine automation cabinets, and process instrumentation enclosures where wiring speed, reliability, and long-term maintenance access are non-negotiable. As an authorized sourcing partner, Konmask.com stocks genuine WAGO 280-104 units with full traceability for B2B procurement teams.
Product Positioning: The 280-104 targets panel builders and OEM integrators who demand IEC-compliant, tool-free termination at 4 mm² cross-section. Its compact pitch and push-in CAGE CLAMP® technology reduce wiring time by up to 50% versus traditional screw terminals, directly lowering labor cost per panel.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 280-104 |
| Series | TOPJOB S (280 Series) |
| Terminal Type | Through / Feed-through Terminal Block |
| Connection Technology | Push-in CAGE CLAMP® (tool-free) |
| Rated Cross-Section | 0.08 – 4 mm² (AWG 28–12) |
| Rated Current | 32 A |
| Rated Voltage | 800 V AC/DC |
| Impulse Withstand Voltage | 8 kV |
| Pollution Degree | 3 |
| Mounting | DIN 35 rail (EN 60715) |
| Pitch / Width | 6 mm |
| Color | Grey (RAL 7035) |
| Housing Material | Polyamide (PA 66), UL 94 V-0 |
| Contact Material | Copper alloy, tin-plated |
| Operating Temperature | -60 °C … +130 °C |
| Protection Degree | IP 20 |
| Approvals | UL, CSA, VDE, ATEX (Ex II 2 GD), GL, DNV |
| Standards | IEC 60947-7-1, EN 60947-7-1 |
| Weight | approx. 3.38 kg / 100 pcs |
| Country of Origin | Germany |
Proven Application Environments
- Machine Automation Panels: High-cycle wiring in PLC I/O marshalling cabinets where re-termination frequency demands tool-free access.
- Process Control & DCS Enclosures: Field signal termination for 4–20 mA loops, RTD, and thermocouple circuits requiring stable low-resistance contact.
- Power Distribution Boards: 32 A rated current supports motor control and power feed circuits up to 4 mm².
- Marine & Offshore Installations: DNV/GL approved; suitable for shipboard control panels subject to vibration and humidity.
- Hazardous Area Panels: ATEX-certified variant available for Zone 1/21 installations.
- Railway & Transportation: Shock/vibration-resistant CAGE CLAMP® contact maintains gas-tight connection under dynamic loads.
Engineering Advantages
- Tool-Free Push-In Connection: Solid and fine-stranded conductors insert directly — no screwdriver required, eliminating torque variation errors.
- CAGE CLAMP® Technology: Spring-force clamping maintains constant contact pressure across thermal cycles, preventing loosening over service life.
- Compact 6 mm Pitch: Higher terminal density per DIN rail meter versus 8 mm or 10 mm pitch alternatives — critical in space-constrained enclosures.
- Color-Coded Variants: Available in grey, blue (neutral), green-yellow (PE), and red — simplifies circuit identification per IEC 60446.
- Test Slot Access: Integrated test point accepts 2.3 mm test probe for in-situ circuit verification without disconnection.
- Wide Temperature Range: -60 °C to +130 °C rated — suitable for outdoor enclosures and high-ambient industrial environments.
System Architecture & Signal Flow
The 280-104 functions as a passive feed-through node in a terminal strip assembly. Incoming conductors (field side) and outgoing conductors (panel/load side) share a common copper bus bar within the housing. The CAGE CLAMP® spring applies radial force to the conductor against the current bar, creating a gas-tight, vibration-proof connection without mechanical fasteners.
In a typical PLC marshalling architecture:
- Field cables terminate on the left-side push-in port.
- Internal panel wiring (to I/O modules, relays, or power supplies) connects on the right-side port.
- Test probe inserted into the top slot allows live circuit measurement without breaking the circuit.
- End brackets (280-300) and partition plates (280-332) complete the terminal strip assembly on standard TS 35 rail.
Sourcing & Quality Verification
- Genuine WAGO Product: All units sourced through authorized WAGO distribution channels with full supply chain documentation.
- Batch Traceability: Date codes and batch numbers available upon request for quality-critical procurement.
- Inspection: Units inspected for housing integrity, contact condition, and marking legibility prior to dispatch.
- Packaging: Original WAGO factory packaging; quantity per pack as per WAGO standard (typically 50 or 100 pcs/box).
- Counterfeit Risk Mitigation: Konmask.com does not source from grey-market or unverified secondary suppliers. Certificate of Conformance (CoC) available on request.
Procurement Process
- Submit RFQ: Contact support@konmask.com with part number, quantity, and required delivery date.
- Quotation: Receive itemized quotation with unit price, lead time, and shipping options within 1 business day.
- Order Confirmation: Place order via Konmask.com checkout or purchase order (PO) for approved B2B accounts.
- Dispatch & Tracking: Orders dispatched with tracking number; express and freight options available for large quantities.
- Documentation: Packing list, commercial invoice, and CoC provided with every shipment.
Technical FAQ
Q: Can the 280-104 accept fine-stranded wire without a ferrule?
A: Yes. The push-in CAGE CLAMP® accepts fine-stranded conductors (Class 5/6) directly from 0.08 mm². For conductors below 0.5 mm², use of an end sleeve (ferrule) is recommended per IEC 60947-7-1 for optimal contact reliability.
Q: Is the 280-104 suitable for DC applications?
A: Yes. Rated at 800 V DC, it is fully suitable for 24 VDC control circuits, 48 VDC bus systems, and up to 800 VDC power applications within the rated current.
Q: What accessories are compatible with the 280 series?
A: Compatible accessories include end brackets (280-300), partition plates (280-332), jumpers (280-400 series), marker carriers (280-500 series), and test plugs (280-411).
Q: What is the minimum order quantity (MOQ)?
A: No MOQ for standard orders via Konmask.com. For bulk pricing tiers, contact us with your required quantity.
Q: Can I request a Certificate of Conformance?
A: Yes. CoC is available for all orders upon request at no additional charge.
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