Balluff BES M12MI-PSC40B-S04G | M12 Inductive Prox 4mm PNP NO 3-Wire, Shielded, M12 Plug
Balluff BES M12MI-PSC40B-S04G inductive proximity sensor — M12 × 1 shielded, 4 mm flush sensing range, PNP NO 3-wire, 10–30 V DC, M12 × 1 4-pin plug. Stainless steel housing, IP67.
Product Overview
The Balluff BES M12MI-PSC40B-S04G (Order Code: BES02L3 / BES00C8 depending on regional catalog) is a standard M12 inductive proximity switch for non-contact detection of ferrous metal targets. It features a shielded (flush-mountable) M12 × 1 mm brass/nickel-plated or stainless steel barrel, 4 mm nominal sensing range when flush-mounted, and a PNP Normally Open (NO) 3-wire DC output. Connection is via an integral or matching M12 × 1, 4-pin A-coded male connector (S04G = M12 plug, 4-pin, straight) — cable version would be "-C-...". Operating voltage is 10–30 V DC with short-circuit, reverse-polarity, and overload protection. LED indicator shows switching status. Suitable for conveyor, packaging, and general machine automation.
Technical Specifications (Electrical & Sensing)
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Parameter
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Specification
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Order Number (Balluff)
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BES M12MI-PSC40B-S04G (Global Type — Catalog Ref. often BES02L3)
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Sensor Type
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Inductive Proximity Switch — 3-Wire DC
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Nominal Sensing Range (Sn)
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4 mm (flush / shielded mounting)
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Assured Operating Distance (Sa)
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0 … 3.2 mm (≤ 80 % Sn)
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Output Type
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PNP (sourcing), Normally Open (NO) — 3-wire (Brown +24V, Blue 0V, Black signal)
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Switching Frequency (f)
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≤ 2000 Hz
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Operating Voltage (Ub)
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10 … 30 V DC
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No-Load Current (typ.)
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≤ 10 mA
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Max. Output Current (Ie)
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200 mA (short-circuit protected)
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Voltage Drop (max.)
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≤ 2 V DC @ Ie
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Hysteresis
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≤ 5 % of Sn (typical)
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Repeat Accuracy
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≤ 1 % of Sn
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Technical Specifications (Mechanical & Environmental)
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Parameter
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Specification
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Thread / Housing
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M12 × 1 mm — Shielded (Flush-mountable)
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Housing Material
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Brass, nickel-plated (standard) — some variants: Stainless Steel 1.4305 (AISI 303)
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Sensing Face Material
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PBT (Polybutylene Terephthalate), black
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Overall Length
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Approx. 55–60 mm (standard M12 short body ~45 mm + connector overhang depends on plug style)
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Connection Type
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M12 × 1, 4-pin A-coded Male Plug (Straight — S04G code) — mating socket cable/cordset ordered separately
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LED Indicator
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Yellow LED — ON = target detected
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Degree of Protection
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IP67 (IEC 60529), IP69K optional on stainless variant — verify per sub-type
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Operating Temp.
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-25 … +70 °C
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Shock / Vibration
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30 g (11 ms) / 55 Hz … 2 kHz, 1 mm amplitude (IEC 60068-2)
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EMC Compliance
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EN 60947-5-2
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Approvals
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CE, cULus listed, EAC
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Weight (Approx.)
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30 g
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Key Features
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Flush-Mountable (Shielded): Can be installed flush with metal surfaces without reducing sensing range due to neighboring ferrous material — simplifies mechanical design.
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High Switching Frequency (2 kHz): Detects fast-moving parts on high-speed conveyors or rotary indexing tables.
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PNP NO 3-Wire Standard: Industry-default for European and Asian machinery — directly interfaces with most PLC digital inputs.
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M12 A-Coded 4-Pin Plug (S04G): Quick-disconnect — no field soldering; use standard M12 4-pin female cordset (e.g. Balluff BCC...).
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Rugged Metal Barrel: Nickel-plated brass withstands mechanical impact and coolant/oil splashes in shop-floor environments.
Typical Applications
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Conveyor Part Detection: Verify presence/absence of pallets, cans, bottles, or metal stamped parts on transport lines.
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Machine Tool Position Check: Confirm fixture clamped, guard closed, or slide at home position before cycle start.
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Automation Indexing: Count metallic tabs or detect cylinder end-position via embedded metal target.
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Packaging Machinery: High-speed product-in-place verification prior to sealing/labeling.
Code Decode: BES = Balluff Inductive Sensor | M12MI = M12 threaded, shielded (flush), metal housing | PSC40B = PNP NO, 4 mm range, 10–30 V DC, short-circuit protected | S04G = Connector M12 × 1, 4-pin A-coded, straight male plug (pigtail/cable would be e.g. -C- with length). Mating cordset example: Balluff BCC M323-0000-1A-004-XF2434-030 (M12 4-pin F to open ends, 3 m). For NPN version see BES M12MI-NSC40B-S04G.
