Phoenix Contact QUINT-PS Modules

Technical Dossier

Product Details And Specifications

Phoenix Contact QUINT-PS Series: Comprehensive Module Range and Technical Overview

The Phoenix Contact QUINT-PS series represents one of the most widely deployed DIN-rail power supply families in global heavy industry. Installed across chemical processing plants, nuclear power facilities, oil refineries, offshore platforms, and large-scale manufacturing automation systems, the QUINT-PS line is recognized for its active redundancy management, dynamic boost capability, and SFB (Selective Fuse Breaking) technology. These characteristics make it the reference standard for 24 VDC bus supply in safety-instrumented systems (SIS), distributed control systems (DCS), and programmable logic controller (PLC) cabinets worldwide. The series covers output current ratings from 2.5 A to 40 A, accommodating everything from compact field junction boxes to high-density marshalling panels.

The Evolution of QUINT-PS Architecture

The QUINT-PS architecture has undergone three distinct engineering generations since its introduction. The first generation established the core single-phase AC input / 24 VDC output topology with passive current limiting. The second generation introduced the SFB (Selective Fuse Breaking) function, enabling the power supply to deliver up to 200% of rated current for 12 ms to selectively blow downstream fuses without tripping the upstream breaker — a critical feature for fault isolation in multi-branch 24 VDC distribution systems.

The third and current generation added the POWER BOOST function (up to 125% continuous overload for 5 seconds), integrated DC OK relay contact output, and full compatibility with the QUINT-UPS uninterruptible power supply modules for seamless battery backup integration. Across all generations, Phoenix Contact maintained backward-compatible DIN-rail footprints and terminal block pinouts, allowing field replacement without rewiring. The QUINT-PS/1AC/24DC/40 (Order No. 2866789) represents the highest-current single-phase variant in the current generation, rated at 40 A / 960 W output.

For applications requiring three-phase input, the QUINT-PS/3AC series provides equivalent functionality. For lower-power nodes, the MINI-PS and STEP-PS families serve as cost-optimized alternatives, though without SFB technology. The QUINT-PS/24DC/24DC/10 and similar DC/DC variants address applications where only a DC bus is available upstream.

QUINT-PS Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the Phoenix Contact QUINT-PS series. Each entry includes the order number and a concise functional description.

2866789 — QUINT-PS/1AC/24DC/40: Single-phase input, 24 VDC / 40 A output, 960 W, SFB + POWER BOOST, DC OK relay.

2938600 — QUINT-PS/1AC/24DC/20: Single-phase input, 24 VDC / 20 A output, 480 W, SFB technology, wide-range AC input.

2866763 — QUINT-PS/1AC/24DC/10: Single-phase input, 24 VDC / 10 A output, 240 W, compact footprint, SFB function.

2866750 — QUINT-PS/1AC/24DC/5: Single-phase input, 24 VDC / 5 A output, 120 W, DIN-rail mount, DC OK signaling.

2866747 — QUINT-PS/1AC/24DC/2.5: Single-phase input, 24 VDC / 2.5 A output, 60 W, smallest QUINT-PS variant.

2866776 — QUINT-PS/1AC/12DC/10: Single-phase input, 12 VDC / 10 A output, for legacy 12 V bus systems.

2866802 — QUINT-PS/1AC/48DC/5: Single-phase input, 48 VDC / 5 A output, telecom and SELV bus applications.

2866815 — QUINT-PS/3AC/24DC/40: Three-phase input, 24 VDC / 40 A output, 960 W, for three-phase industrial panels.

2866828 — QUINT-PS/3AC/24DC/20: Three-phase input, 24 VDC / 20 A output, balanced three-phase load distribution.

2866831 — QUINT-PS/3AC/24DC/10: Three-phase input, 24 VDC / 10 A output, compact three-phase supply.

2320916 — QUINT-PS/24DC/24DC/10: DC/DC converter, 24 VDC input, 24 VDC / 10 A output, for DC-only bus architectures.

2320929 — QUINT-PS/24DC/24DC/20: DC/DC converter, 24 VDC input, 24 VDC / 20 A output, high-current DC/DC variant.

2866844 — QUINT-PS/1AC/24DC/20/CO: Single-phase, 24 VDC / 20 A, with integrated QUINT-UPS interface for battery backup.

2866857 — QUINT-PS/1AC/24DC/40/CO: Single-phase, 24 VDC / 40 A, with QUINT-UPS interface, highest-current UPS-ready variant.

2866870 — QUINT-PS/1AC/24DC/10/CO: Single-phase, 24 VDC / 10 A, QUINT-UPS interface, mid-range UPS-ready supply.

2866883 — QUINT-PS/1AC/24DC/5/CO: Single-phase, 24 VDC / 5 A, QUINT-UPS interface, low-power UPS-ready supply.

Sourcing Hard-to-Find & Obsolete QUINT-PS Parts

The QUINT-PS series entered its mature lifecycle phase in the mid-2010s. While Phoenix Contact continues to manufacture current-generation variants, earlier second-generation units (identifiable by the absence of the POWER BOOST label on the front panel) are no longer in active production. Field replacement of these units requires either a direct current-generation equivalent or a cross-reference to the updated order number.

Quality Control for the QUINT-PS Range

Phoenix Contact QUINT-PS modules incorporate active power factor correction (PFC) circuitry, multi-stage EMC filtering, and a proprietary SFB pulse generator — all of which require functional verification beyond a simple output voltage check. DriveKNMS applies a structured test protocol to every QUINT-PS unit processed through its facility:

Stage 1 — Visual and Mechanical Inspection: Terminal block integrity, DIN-rail latch function, front-panel LED and relay contact continuity check.

Stage 2 — Input Range Verification: AC input tested across the full rated range (85–264 VAC for single-phase variants) to confirm PFC and inrush limiting behavior.

Stage 3 — Output Load Test: Full-load burn-in at 100% rated current for a minimum of 30 minutes. Output voltage regulation measured at 0%, 50%, and 100% load.

Stage 4 — SFB Function Test: A controlled 200% overload pulse is applied for 12 ms to verify the SFB current delivery and automatic recovery to rated output.

Stage 5 — DC OK Relay Test: Relay contact switching verified at both power-on and simulated output undervoltage conditions.

All test results are logged and available upon request with each unit shipment.