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Brand: Turck
Turck TB-8M8M-4-0.3-BSMK19/S771 8-Port M8 Junction Box with 0.3
Description
About the TB-8M8M-4-0.3-BSMK19/S771
TB-8M8M-4-0.3-BSMK19/S771 is a passive sensor and actuator junction box with eight M8 female ports (4-pin), a fully encapsulated housing and a 0.3 m shielded 19-conductor homerun cable ending in an M16 male connector.
Headline features from the datasheet: Fully encapsulated; Housing color: Black; RoHS compliant; Housing material: Nylon; Oil Resistant; Black PVC jacket, shielded, 19X22 AWG; Sunlight Resistant; Flame Ratings: UL 1685 FT4, UL1061, CSA; -40 Cold Bend Rating.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | TB-8M8M-4-0.3-BSMK19/S771 |
| Ident number | 100012330 |
| Distributed I/O | Junction box, 8 -port, with integral |
| Housing | Plastic, PA6-GF30, Black |
| I/O Port | Female, M8 × 1 |
| Design specification | Acc. to IEC 61076-2-104 |
| Number of contacts | 4 |
| Contacts | Brass, CuZn, Gold-plated |
| Contact carriers | Plastic, PA 4.6 GF30, Black |
| Connector seal | O-ring, Plastic, FKM/FPM |
| Housing material/finish | Brass, CuZn, Nickel-plated |
| Mechanical life | > 100 Mating cycles |
| Pollution degree | 3 |
| Protection class (When coupled) | IP67, IP68, IP69, IP69K |
| Homerun connector | Male, M16 × 0.75 with cable, Side exit |
| Connector B | M16 × 0.75, Straight |
| Connector body | Plastic, TPU, Black |
| Coupling nut | Plastic, Delrin, Black |
| Seal | Plastic |
| Cable ID | RF50995 |
| Total number of conductors | 19 |
| Cable diameter | Ø 8.51 mm |
| Cable jacket | PVC, Black |
| Shielding | Aluminum/polyester (IN), 24 AWG, TC |
| Conductor diameter | 0.048 “ |
| Conductor material | TC (tinned copper) |
| Conductor insulation material | SR-PVC |
| Conductor size | 19 x 22 AWG [Similar to 0.34 mm²] |
| Number of strands x O.D. | 19 x 0.0058 “ |
| Conductor colors | YE, OG, GY, RD, WH, VT, GY/BN, RD/ |
| Rated voltage | 30 VDC |
| Current | 2 A per signal contact, total current 6 A |
| Bending radius (static) | ≥5xØ |
| Bending radius (dynamic) | ≥ 15 x Ø |
| UL cold bend rating | -40 °C |
| Ambient temperature range (static) | -40…+85 °C |
Typical use and installation notes
Eight sensors can be combined into one multiconductor cable so that only a single homerun cable goes back to a cabinet or to a field box, which saves cable and wiring time on skids and conveyors. The cable is listed as instrumentation tray cable, sunlight and oil resistant, with a -40 C cold-bend rating, and the datasheet gives IP67 and IP68 / IP69K when coupled. The /S771 suffix identifies this exact variant, so match the whole code.
Installation hint: fix the box with its fixing holes, fit the sensor connectors to a firm seat and cap unused ports, and support the homerun cable with clamps respecting the bending radius in the table. Do not exceed the current and voltage ratings of the contacts.
Ordering code and what to confirm
TB-8M8M identifies an 8-port M8 junction box; the following figures and the BSMK19 element describe the cable length (0.3 m here) and the homerun cable and connector, and /S771 is a special-version suffix. Ident number 100012330 identifies this exact variant.
Points to confirm with us before ordering: the cable construction for your environment, the matching cabling on the control side, the number of ports and the cable length, and the connector type on the homerun end. Everything in the table comes from the datasheet as published, so the maker document is the final reference.
Related Turck products: Turck BIM-UNT-AP6X/S97/S1165 T-Slot Cylinder Magnetic Field, Turck BI5-M18-AP6X-H1141 Inductive Proximity Sensor, Turck NI50-CP80-VP4X2-H1141 CP80 Rectangular Inductive Sensor 50, Turck BI15-CP40-VP4X2-H1141 CP40 Rectangular Inductive Sensor 15, Turck BI8U-M18-AP6X-H1141 M18 Flush Inductive Sensor 8 mm PNP and Turck BI5U-M18-AP6X-H1141 M18 Flush Inductive Sensor 5 mm PNP.
Documents and quotation
The official Turck datasheet for TB-8M8M-4-0.3-BSMK19/S771 is hosted here as a PDF so you can check every value before you send an RFQ. Seven Star LLC is an independent supplier in Muscat; we do not set the manufacturer’s specifications, and this page restates what the datasheet prints. For availability and a quotation, send the exact code TB-8M8M-4-0.3-BSMK19/S771 and your quantity through the Automation Accessories category or the RFQ form.
Datasheets & Documents
- Datasheet Turck TB-8M8M-4-0.3-BSMK19/S771 Datasheet Download
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About brand
Turck is the German automation company for sensors, connectivity, fieldbus I/O and interface technology. It grew from Hans Turck's engineering office in Mülheim an der Ruhr: in 1965 a chemical plant ordered an isolation amplifier for intrinsically safe circuits, and the first 20 units were built by his brother Werner Turck in Halver. The family-owned Turck group is still headquartered in Mülheim an der Ruhr, with production in Halver and other sites.
Seven Star LLC is an independent supplier in Muscat. We list Turck sensors and I/O devices for machine builders and maintenance teams in Oman and the GCC.
Turck company profile
| Founded | 1965, Germany, by the brothers Hans and Werner Turck |
|---|---|
| First product | An isolation amplifier with intrinsically safe circuits for explosion-protected areas, first supplied to Chemische Werke Hüls |
| Headquarters | Mülheim an der Ruhr, Germany; production in Halver |
| Ownership | Family-owned group; Turck Holding was formed in 1994 |
| Product families | Inductive, capacitive and ultrasonic sensors, TBEN block I/O and fieldbus modules, IO-Link masters and hubs, connectors and cordsets, isolating barriers and interface modules, RFID systems |
Milestones
- 1965: An order from a German chemical plant for an amplifier module starts the business; Werner Turck builds the first 20 units.
- 1970: Hans Turck KG and Werner Turck KG are registered as separate companies.
- 1975: Hans Turck KG opens its building in Mülheim an der Ruhr.
- 1994: Turck Holding combines the two Turck companies under one roof.
Turck product series
Most of the Turck products here are inductive proximity sensors: threaded M12, M18 and M30 barrels in flush (BI) and non-flush (NI) versions, uprated-range (U) sensors, rectangular CP40 and CP80 housings and BIM magnetic-field sensors for detecting pistons in pneumatic cylinders. The type code describes the sensor; in BI5-M18-AP6X-H1141, BI means flush mounting, 5 is the switching distance in mm, AP6X a three-wire PNP output and H1141 the M12 connector.
Turck also makes RU ultrasonic sensors, PS pressure, TS temperature and LS level sensors, FCI inline flow sensors, the CMVT vibration and temperature sensor for condition monitoring over IO-Link, and fieldbus and Ethernet I/O modules and communication components.
Where Turck sensors are used
Position detection on conveyors, packaging machines, presses and robotic cells; level, pressure and temperature monitoring on hydraulic units and process skids; and vibration monitoring on motors, pumps and fans.
Turck products we list
Ordering Turck sensors: what we need
Send the full type code and the six- or seven-digit ID number printed on the sensor or its label. If the label is missing, give the housing size, flush or non-flush mounting, switching distance, output type (PNP or NPN, NO or NC), supply voltage and connection (cable or connector).
Facts checked against Turck's published company history, October 2026.
Browse Turck products by category: Inductive Proximity Sensors, Flow Indicators & Switches, Level Instrumentation, Pressure Instrumentation, Temperature Instrumentation, Vibration Monitoring.
FAQ
Questions about the Turck TB-8M8M-4-0.3-BSMK19/S771 8-Port M8 Junction
Answers from our engineering team on installation, compatibility and integration.
01How many ports does TB-8M8M-4-0.3-BSMK19/S771 have?
Eight M8 female ports with 4 contacts each, as described in the datasheet.
02What is the homerun connection of TB-8M8M-4-0.3-BSMK19/S771?
Male, M16 × 0.75 with cable, Side exit; cable length 0.3 m, (+50mm or 4% of length/-0.0,.
03What protection class does TB-8M8M-4-0.3-BSMK19/S771 have?
IP67, IP68, IP69, IP69K when coupled.
04What electrical rating does TB-8M8M-4-0.3-BSMK19/S771 have?
30 VDC; 2 A per signal contact, total current 6 A.
05What should I confirm before ordering TB-8M8M-4-0.3-BSMK19/S771?
Confirm the cable construction for your environment, the matching cabling on the control side, the number of ports and the cable length, and the connector type on the homerun end.
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