WAGO 788-412 – Relay Module | 788 Series Interface Platform
Engineering Background: The WAGO 788-412 is a compact relay module from WAGO’s 788 Series interface platform, engineered for reliable signal switching and isolation in industrial control panels. Designed to meet the demanding requirements of modern automation architectures, this module bridges field-level signals with PLC and DCS control systems through robust electromechanical relay technology.
Product Positioning: Targeted at control system engineers and panel builders who require a dependable, DIN rail-mounted relay interface with standardized footprint and proven field reliability. The 788-412 is a preferred choice for OEM machine builders, system integrators, and MRO procurement teams sourcing verified genuine WAGO components.
Complete Technical Specifications
- Manufacturer: WAGO Kontakttechnik GmbH & Co. KG
- Part Number / SKU: 788-412
- Series: WAGO 788 Series – Relay Interface Modules
- Module Type: Electromechanical Relay Module
- Mounting: DIN 35 mm rail (EN 60715)
- Contact Configuration: 1 CO (SPDT – Single Pole Double Throw)
- Rated Coil Voltage: 24 V DC (nominal)
- Contact Rated Current: 6 A
- Contact Rated Voltage: 250 V AC / 30 V DC
- Switching Capacity: 1,500 VA / 180 W
- Coil Power Consumption: ≤ 1.0 W
- Operate Time: ≤ 15 ms
- Release Time: ≤ 10 ms
- Mechanical Life: ≥ 10 × 10⁶ operations
- Electrical Life: ≥ 1 × 10⁵ operations (at rated load)
- Isolation Voltage (Coil–Contact): 4 kV AC (1 min)
- LED Status Indicator: Yes – coil energized indicator
- Protection Class: IP20
- Operating Temperature: -40 °C to +70 °C
- Storage Temperature: -40 °C to +85 °C
- Relative Humidity: 5 % to 95 % (non-condensing)
- Dimensions (W × H × D): 6.1 mm × 82.5 mm × 59.0 mm (approx.)
- Weight: approx. 80 g
- Connection Method: CAGE CLAMP® spring-clamp terminals
- Conductor Cross-Section: 0.08 – 2.5 mm²
- Approvals / Certifications: CE, UL, cUL, VDE, GL (verify current datasheet)
- Country of Origin: Germany
- HS Code (Reference): 8536.49
Proven Application Environments
- PLC digital output signal amplification and isolation
- Industrial control panel relay logic circuits
- Motor starter auxiliary contact interfaces
- Building automation and HVAC control systems
- Process control and instrumentation panels
- Safety relay interlock circuits (non-SIL rated auxiliary use)
- OEM machine tool control cabinets
- Railway and transportation auxiliary control (where approved)
- Energy management and smart grid interface panels
Engineering Advantages
- Ultra-slim 6.1 mm pitch – maximizes panel density without sacrificing accessibility
- CAGE CLAMP® termination – tool-free, vibration-proof wiring; no screwdriver required for conductor insertion
- Integrated LED indicator – instant visual coil status confirmation reduces commissioning time
- Wide temperature range (-40 °C to +70 °C) – suitable for harsh industrial and outdoor enclosure environments
- 4 kV isolation – robust galvanic separation protects sensitive PLC I/O from field-side transients
- Standardized 788 Series footprint – direct interchangeability with other WAGO 788 relay variants
- Multi-approval listing – CE, UL, VDE simplifies global machine export compliance
System Architecture & Signal Flow
The WAGO 788-412 operates as a galvanically isolated switching element between the control-side (PLC/DCS 24 V DC output) and the load-side circuit. Signal flow is as follows:
- Control Input: 24 V DC coil energized by PLC digital output or control relay
- Relay Actuation: Electromechanical armature closes/opens SPDT contact set within ≤ 15 ms
- Load Switching: NO/NC/COM contacts switch load circuit up to 6 A / 250 V AC
- Status Feedback: Integrated LED illuminates to confirm coil energized state
- Isolation Barrier: 4 kV coil-to-contact isolation prevents field-side faults from propagating to control network
This architecture is compatible with both sourcing (PNP) and sinking (NPN) PLC output configurations when wired appropriately.
Sourcing & Quality Verification
Konmask.com operates a 4-step verification protocol for all WAGO components:
- Authorized Channel Traceability: Each unit is sourced through documented supply chains with verifiable lot traceability back to WAGO-authorized distributors or factory-direct channels.
- Physical Authenticity Inspection: Housing markings, CAGE CLAMP® spring mechanism, label print quality, and part number laser engraving are verified against WAGO reference standards.
- Functional Electrical Test: Coil pull-in voltage, contact resistance, and isolation resistance are spot-tested on incoming batches.
- Documentation Package: Certificate of Conformity (CoC) and packing list available upon request for each shipment.
Procurement Process
- Submit RFQ: Email support@konmask.com with required quantity, delivery timeline, and destination country
- Receive Quotation: Formal quotation with unit price, lead time, and shipping options within 24 business hours
- Order Confirmation: Purchase order or proforma invoice issued; payment via T/T, PayPal, or agreed terms
- Quality Check & Dispatch: Pre-shipment inspection completed; tracking number provided within 48 hours of payment clearance
- After-Sales Support: 12-month warranty on genuine parts; technical support available via email or WhatsApp
Technical FAQ
Q: Is the WAGO 788-412 compatible with 24 V AC coil voltage?
A: No. The 788-412 is rated for 24 V DC coil input. For AC coil variants, refer to the WAGO 788 Series selection guide for the appropriate model suffix.
Q: Can the 788-412 switch inductive loads such as motor contactors?
A: Yes, with appropriate derating. For inductive loads, apply a derating factor per IEC 61810 and consider adding a freewheeling diode or RC snubber on the load side to extend contact life.
Q: What is the minimum order quantity (MOQ)?
A: No minimum order quantity for standard stock items. Volume pricing available for orders of 10 pcs and above.
Q: Do you provide WAGO original packaging?
A: Yes. All units are supplied in original WAGO packaging with factory labels intact unless otherwise specified.
Q: Can I request a sample before placing a bulk order?
A: Sample orders (1–2 pcs) are accepted. Contact support@konmask.com to arrange sample shipment terms.
Q: What shipping methods are available for international orders?
A: DHL Express, FedEx International Priority, UPS Worldwide, and economy air freight options are available. Customs documentation and HS code declaration are included.
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