Low stock: 9 left
Westinghouse 4117A12H27 Relay Modules
Westinghouse 4117A12H27 Relay Modules
Brand/Manufacturer: Westinghouse
Order Number: 4117A12H27
Type: Relay Modules
Country of Origin: Sweden
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
Configured for discrete circuit switching and contact multiplication in WDPF platforms, the Westinghouse 4117A12H27 (4117A12H27 Relay - 24 VDC) provides direct physical/electrical execution. This assembly isolates control logic levels from field-side loads by converting 24 VDC coil activation signals into mechanical contact closure state changes.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 4117A12H27 |
| Brand | Westinghouse |
| Origin | USA |
| Weight | 0.35 kg |
| Dimensions | Standard WDPF Relay Assembly Size |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 2.4 W per coil |
| Nominal Coil Voltage | 24 VDC |
| Contact Rating | 5 A at 120 VAC / 28 VDC |
| System Platform | WDPF DCS |
| Loop Signal Type | 4-20 mA HART loop protocol |
| Circuit Isolation | Channel-to-channel isolation |
DCS Architecture & Loop Processing
Integrated within the WDPF control chassis, the relay hardware incorporates channel-to-channel isolation to decouple sensitive internal digital bus logic from external industrial load transients. Input conditioning loops support control signaling integrated alongside standard 4-20 mA HART loop protocol wiring networks. Integrated cold junction compensation (CJC) references maintain analog channel processing accuracy across the shared subrack backplane assembly.
Frequently Asked Questions
Q: Can individual relay coils be replaced while the subrack remains energized?
A: No, coil supply power and field contact circuits must be de-energized before pulling or replacing the relay module to prevent contact arcing and backplane electrical noise.
Q: What protection measures exist to prevent inductive kickback when driving 24 VDC relay coils?
A: Integral flyback suppression diodes or RC snubber circuits are built into the coil driving pathway to clamp inductive voltage spikes upon coil de-energization.
Field Installation Guidelines
- Turn off main power and isolate all field contact voltage sources prior to installing the relay assembly.
- Follow standard ESD handling procedures by using a grounded wrist strap attached to the metal cabinet frame.
- Check relay terminal pins and socket contacts for debris, corrosion, or physical deformation before mounting.
- Align the relay pin base with the socket housing and press firmly until the locking retaining clips engage fully.
- Tighten terminal block wiring screws to specified field torque ratings to prevent loose wire connections under vibration.
- Verify field contact wiring shields are bonded to a single cabinet earth terminal to maintain high electrical noise rejection.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson