SDQ SAA12038B2H — 220V 20W 120×38mm AC Cabinet Cooling Fan

SDQ · SAA Series · 120×38mm AC Axial Fan · In stock

The SDQ SAA12038B2H is a 120×38 mm aluminium-frame AC axial cooling fan running directly on 220 V single-phase mains at roughly 20 W. It is built for continuous-duty cabinet cooling inside Allen-Bradley control panels, Siemens SIMATIC cabinets and Schneider Modicon switchgear, where drivers are not available and a hardwired 220 V supply is the only practical option. KOEED stocks it as a factory automation cooling spare that cross-references ebm-papst 1200 / 1214 / 4600 / 4650, Ziehl-Abegg FE071-SDK and Sanyo Denki San Ace 120 footprints.

Key Technical Specifications & Overview

The 220 V rating means the fan plugs directly into a control-cabinet outlet or terminal block — no DC driver, no inverter, no extra 24 V supply. That makes the SAA12038B2H a drop-in replacement for older ebm-papst 4600/4650 and Ziehl-Abegg FE071-SDK frames in retrofit jobs on Mitsubishi MELSEC panels and Omron SYSMAC racks. For related DC / 24 V builds, see our SDQ SAA12038 24V DC fan and the 172×150×51 mm step-up SDQ SAA17251 220V family page.

Application Scenarios & Where It Fits

The SAA12038B2H is a generic-purpose 220 V AC cooling fan — it is not bound to a single OEM. It shows up wherever a 120 mm panel cut-out, 38 mm depth, and 220 V mains are the only constraints, and the budget cannot support a name-brand ebm-papst or Ziehl-Abegg unit. Common deployments in factory automation include:

• Control cabinets & PLC panels — cooling Allen-Bradley 1756-L73 ControlLogix racks, Siemens S7-300 CPU stations, and Mitsubishi Q02HCPU bases where a 24 V supply is already loaded with I/O.
• MCC / switchgear cabinets — exhaust cooling inside Schneider Prisma, ABB MNS and Siemens Sivacon cubicles that already have 220 V auxiliary circuits.
• Variable-frequency drive cabinets — supplementary airflow on Yaskawa CIMR-V, Schneider Altivar 320 and Yaskawa Σ-7 drive cabinets where the drive itself is the heat source.
• CNC machine enclosures — roof- or door-mount cooling on Fanuc 0i-MD / 30i-B panels and Mitsubishi M70 / M80 enclosures to keep the spindle drive below its thermal trip.
• Robotics controller cabinets — cooling Fanuc R-30iB and Yaskawa DX200 controller enclosures in cells with high duty cycles.
• HVAC / AHU electrical rooms — ventilation of VFD rooms and building-automation panels that run on the building 220 V mains.
• Inverter & UPS cabinets — supplementary airflow on solar / UPS inverter cabinets, especially in outdoor cabinets with 220 V single-phase available.
• Vision inspection stations — light-duty cooling next to KEYENCE CV-5000 and XG-8000 vision processors and Panasonic FP7 PLC racks.

If your cabinet uses a 24 V DC bus only, browse the cabinet cooling fan category for DC variants, or check the SDQ SAA12038 24V DC equivalent. For brand-aligned spare-parts sourcing for the panel that sits behind the fan, see our Allen-Bradley ControlLogix and Siemens SIMATIC S7-300 pages.

Integration & Wiring Notes

The SAA12038B2H is intentionally low-integration. It has no signal pins, no tach output, no alarm line, and no PWM input — it is a two-wire 220 V AC load. That keeps wiring simple but means the fan cannot be software-monitored by the PLC.

• Direct mains connection — connect L and N to a 220 V AC auxiliary circuit, fused at 1 A slow-blow, with a dedicated miniature circuit breaker. Do not tap from a DC bus or a 110 V leg without a step-up transformer.
• No driver stage — unlike EC fans (ebm-papst 8414N/8414NG, Sanyo San Ace 9GA), this model needs no 0–10 V / PWM signal. If your cabinet is designed around an EC control loop, this fan will not fit the control scheme.
• EMI / EMC — AC induction motors inject line-borne noise. Place an X2-capacitor line filter (0.1 µF + 2× 1 mH) upstream if the fan shares a circuit with Allen-Bradley 1756-EN2T Ethernet/IP comms or low-level analog I/O.
• Ground continuity — the aluminium frame is conductive; bond the frame stud or mounting screws to cabinet PE to avoid touch-current on the panel skin.
• Rotation & airflow direction — airflow is along the axis of the mounting face. Confirm the airflow arrow on the fan housing matches the cabinet design (intake vs. exhaust) before wiring.
• Do not daisy-chain on a single thermal switch — if you wire the fan through a cabinet thermostat, derate the contactor to 2 A inductive and put a snubber across the contact to handle the motor inrush.
• Mechanical fit — the 120×38 mm frame matches the ebm-papst 4600/4650/4656 and Ziehl-Abegg FE071-SDK panel cut-out (105 mm), so existing finger guards and filter mats can usually be re-used.

For control-loop integration questions on the panel side (twin Ethernet, PROFINET, EtherCAT), see the Siemens S7-1500 CPU spare-parts page and the PLC Error Code Database for thermal-trip diagnostics.

Installation & Commissioning Tips

Mechanical and electrical fit is straightforward, but the SAA12038B2H is still a mains-voltage rotating device. Use the same field practices you would for any ebm-papst 4600-series retrofit in a Schneider or Siemens cabinet:

• Panel cut-out & gasket — cut a 105±0.5 mm hole on a flat, stiffened surface. Use the supplied foam gasket or a cut rubber gasket to stop bypass air; bypass is the #1 cause of “fan installed, panel still hot” complaints.
• Finger-guard / filter — add a metallic finger-guard on the intake side. In dusty plants (cement, grain, textile), add a washable filter mat and clean it every 30 days. Clogged filters push the motor into thermal overload and shorten L10 life dramatically.
• Orientation — mount the fan with the leadwire exit at the bottom (or to the side) so condensate cannot wick into the winding.
• Tighten evenly — torque the four corner screws to ~0.4–0.6 N·m in a cross pattern to avoid warping the aluminium frame, which would distort the bearing bore.
• First-power check — confirm rotation direction against the arrow on the housing; reverse the L/N wires if rotation is wrong (the fan is symmetric, so it will simply spin the other way).
• Thermal verification — after 30 minutes at full load, measure cabinet-internal temperature 50 mm downstream of the fan. The drop should be at least 8–12 °C versus no fan; if not, check for short-circuit airflow paths or blocked exhaust.
• Acoustic — the 38–43 dB(A) rating assumes a free-field measurement. Inside a steel cabinet expect +5 dB(A); plan acoustic foam on the cabinet roof if the panel is operator-station adjacent.
• Spare-pair philosophy — for 24/7 cells, keep one matched SAA12038B2H as a cabinet spare. Fan failures are the most common cause of PLC thermal trips on Omron CJ2M-CPU31 and Allen-Bradley 1769-L30ER CompactLogix panels.

If the panel uses a 24 V DC bus instead, consider the SDQ SAA12038 24V DC variant. For wider 220 V frames (172×150×51 mm), the SDQ SAA17251 220V upgrade fits the same wiring philosophy at higher airflow.

Procurement, Warranty & Lead Time

KOEED sources the SDQ SAA12038B2H through our China Sourcing Company supply chain and dispatches from Shenzhen / Hong Kong. Pricing follows our standard B2B model: no fixed price tag on the page — send the BOM and we reply with availability and unit price within 24 hours on business days.

• Lead time — single-piece and small-lot orders ship from existing Shenzhen stock, typically 2–5 business days to most APAC / EU / North America destinations via DHL, FedEx or UPS.
• Volume orders — for 50+ pcs, treat as a BOM line and request a project quote at Moritta@KOEED.COM. We consolidate fans with related Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE spare parts on the same shipment.
• Warranty — 12-month limited warranty against manufacturing defect under normal industrial use. Warranty excludes damage from over-voltage, dust-clogged intake, or mechanical impact on the impeller.
• Authenticity — every SAA12038B2H ships in original SDQ retail packaging with a batch code on the label. Cross-reference sheet (SAA series ↔ ebm-papst / Ziehl-Abegg / Sanyo / Rosenberg) is included on request.
• Cross-reference support — if you are migrating an older ebm-papst 4600/4650/4656 or a Ziehl-Abegg FE071-SDK, send the old P/N and we will confirm the SDQ equivalent and the mechanical delta (depth, leadwire position, mounting hole pattern).
• Payment & logistics — worldwide shipping, B2B invoicing in CNY / USD / EUR; full tracking on every order. See our Shipping Policy and Return Policy for the standard terms.