Product Details
Configured for voting diode execution and power supply decoupling in System 800xA and High Integrity controller networks, the ABB SS823 3BSE038226R1 (SS823 Voter and Over Voltage Protection Module) provides direct physical/electrical execution. The module manages dual 24 VDC power input channels, providing load sharing and over-voltage clamping to prevent transient power fault propagation across downstream automation backplanes. Internal supervision relays actively track voltage integrity and fault states to drive system diagnostics.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SS823 3BSE038226R1 |
| Brand | ABB |
| Origin | Sweden |
| Weight | 870 g (1.9 lbs) |
| Dimensions | 116 mm x 145 mm x 132 mm (4.6 in x 5.8 in x 5.3 in) |
| Operating Temp | 55 deg C maximum ambient |
| Power Consumption | Heat dissipation 24 W at 20 A load (6 W at 5 A load) |
| Nominal Input Voltage | 1 x 24 VDC |
| Maximum Input Voltage Limit | 60 VDC |
| Rated Input Power | 500 W |
| Rated Output Current | 20 A (Maximum overload threshold: 35 A) |
| Output Voltage Drop | 1.2 V lower than input voltage at maximum current |
| Over Voltage Protection | Cut-off threshold less than 30 V |
| Diagnostics & Features | Load sharing, Supervision relay, High Integrity support |
Backplane Bus Communication Velocity and High Integrity Deterministic Scaling
The SS823 module integrates directly into High Integrity power distribution networks, ensuring continuous, surge-protected DC bus stabilization without introducing transmission delays to adjacent I/O communication buses. Firmware flash compatibility across system power controllers enables real-time voltage monitoring, allowing the supervisory relay to isolate power rail faults instantly. High-density component layout provides rapid thermal dissipation while maintaining deterministic power availability during peak load transients.
Frequently Asked Questions
Q: What is the primary function of the internal supervision relay on the SS823?
A: The supervision relay monitors internal diode health and power channel status, changing state to trigger system alarms if an input channel fails or falls out of tolerance.
Q: What is the maximum over-voltage limit supported by the SS823 before output clamping occurs?
A: The module limits output voltage spikes to less than 30 V to protect sensitive processing boards and I/O modules connected downstream.
Field Installation Guidelines
- Mount the module vertically on standard DIN rails inside the enclosure, maintaining a minimum clearance spacing of 15 mm horizontally and 30 mm vertically to allow natural thermal convection.
- Ensure input wiring matches 24 VDC polarity specifications and that supply circuits are de-energized before making terminal block connections.
- Torque all power terminal screws to manufacturer-specified mechanical limits (typically 0.5 to 0.8 Nm) to ensure low-resistance electrical contact under high current loads.
- Verify that supervisory relay signal cables are routed separately from high-voltage AC distribution conductors to minimize electromagnetic interference.
- Connect protective earth (PE) grounding terminals directly to the cabinet ground busbar using a short, thick copper strap.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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