Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tammarquardt 1297
• “Marquardt 1297” designates a family of trigger-type power-tool switches (not panel rockers) made by Marquardt Group.
• Typical ratings: 120 … 250 V AC, 5 … 10 A (¼ HP @ 120 V), EN/UL 61058 approved.
• Variants (.26xx, .57xx, .71xx, .08xx, etc.) differ in:
– on/off only or on/off + variable-speed regulator (phase-angle TRIAC + potentiometer)
– lock-on button, brake contact, reversing contact set, lamp output, terminal style, etc.
• The complete eight-digit part number, printed on the housing (e.g. 1297.2601), is mandatory for an exact specification or replacement.
Product family and construction
• The 12 xx range in Marquardt’s internal coding is reserved for tool/hand-held switches.
• Series 1297 is a single-hand trigger (sometimes called “pistol” or “Drillschalter”) with an integral sliding trigger and optional electronic speed control.
• Housing: glass-filled PA66, UL 94 V-0; contacts: AgNi or AgSnO₂.
• Mechanical life > 100 k operations under full load; operating temperature –20 … +65 °C.
Electrical core data (typical; see exact datasheet for suffix)
• Resistive load: 5 A @ 250 V AC or 10 A @ 125 V AC.
• Inductive load: 5(5) A @ 250 V AC (first figure = resistive, value in brackets = inductive).
• Motor rating: 120 V AC ¼ HP (some North-American versions); occasional 16 A inrush capability for universal motors.
• Dielectric strength 1500 V AC / 1 min, creepage ≥ 3 mm, clearances ≥ 2.5 mm.
Internal circuit options
a. On / Off only – SPST, two main terminals.
b. On / Off with lock-on – additional latch pin actuated by side button.
c. On / Off + electronic speed control (most common) – trigger couples to a 9 mm travel slide potentiometer (≈ 250 Ω … 470 Ω). A small triac/diac PCB, fed from main terminals, performs phase control.
d. Brake or reversing contacts – extra poles switch the motor field for quick stop or direction reversal (drills/screwdrivers).
e. Auxiliary NC contact – for interlock chains in industrial benches.
Part-number decoding (condensed)
1297.xxyy
│ │└── variant & customer code
│ └── function block
└───── series (trigger switch)Example entries taken from distributor lists and Marquardt drawings:
• 1297.0881 – 120 V ¼ HP on/off + speed; right-hand lock-on.
• 1297.2601 – 5 A / 250 V on/off; no regulator.
• 1297.5751 – on/off + speed + reversing contacts; 6 .3 mm tabs.
If digits are illegible, count terminals and measure body: L ≈ 46 mm, H ≈ 19 mm, trigger width ≈ 13 mm.
• The latest Marquardt catalog (Edition 2023) keeps 1297 in production because many OEM power-tool platforms still use brushed universal motors whose speed is regulated by triac-based triggers.
• Newer brushless tools migrate to Hall/MCU drivers; Marquardt therefore introduced the 116x and 2070 series (with CAN/lin interfaces). Nevertheless, 1297 remains a drop-in spare for legacy drills, grinders, jig-saws, and vacuum cleaners.
• Online sales data (Q1-2024): suffixes .0881, .2601, .5751 widely stocked at distributors (Mouser, TME) and aftermarket tool-part shops; typical retail price €9-15.
Trigger switches differ from panel rockers in three decisive ways:
A simplified schematic of a speed-control version:
Live ──o/ (SW1) ──────┬───┬─► motor
│ └─ R-C snubber // MOV
Potentiometer
Trigger ►───┬────R1────┬────────┬─ Diac ─ Triac ─ Neutral
... phase-angle modulators ...• Using an under-rated counterfeit switch in a Class-I portable tool violates IEC 62841 and can cause overheating or loss of control.
• Marquardt parts are RoHS / REACH compliant; beware of grey-market clones lacking safety approvals.
• Disposal: speed-control versions contain lead-bearing solder; treat as WEEE category 4.
Identification
– Remove mains plug, extract the handle shell.
– Photograph the side label; if unreadable, note terminal count, pot presence, latch geometry.
Replacement procedure
– Order the exact suffix or a Marquardt-approved interchange list (available from Marquardt service).
– Crimp new 4.8 mm or 6.3 mm Faston receptacles if existing ones are slack; never solder directly—heat can warp PA66.
– Observe correct polarity for speed-control PCB (live on switch side, neutral on triac side).
Verification
– Bench-test with autotransformer at 30 % Un, then 100 %.
– Measure temperature rise with a thermocouple; ΔT < 35 K at 5 A continuous.
– Use oscilloscope and line isolation transformer to confirm di/dt < 80 A/µs, meeting EN 55014 emissions.
• Small OEM-specific suffixes may add dust seals or thermal cutoff; without the exact datasheet, treat current and temperature limits as maximum.
• The older rocker-switch interpretation found in some on-line forums is a mis-association with Marquardt’s 1830/1930 rocker range—1297 is definitively the trigger family.
• Request the “Tool Switches – Series 129x” PDF directly from Marquardt (NDAs sometimes apply).
• Study replacement semiconductors (BT137-600, T410-600) for on-board repair when OEM parts are unobtainable.
• Investigate brushless retrofit drives; Marquardt’s 2070 series integrates Hall-based throttle and CAN bus, offering an upgrade path away from 1297.
Marquardt 1297 is a long-standing, highly reliable family of trigger switches for mains-powered hand tools. Variants cover simple on/off, lock-on, reversing, and integrated triac speed control. Correct replacement hinges on the full eight-digit part number. Using genuine, ratings-compliant parts maintains compliance with IEC/EN 61058 and ensures user safety.
User question
ricambio compatibile per interruttore marquandt 1270
Artificial Intelligence Response
Direct answer to the question
‐ A “drop-in” replacement for a Marquardt 1270.xxxx switch exists only if you locate a device whose full eight–digit code (1270.**) or Marquardt-approved successor matches exactly the electrical, mechanical and safety data of the original.
‐ Today the 1270 series is considered obsolete/end-of-life; Marquardt usually recommends migrating to the more recent 166x / 193x (panel-mount push-button) or 1281 (powertool trigger) families**, depending on the original function.
‐ Therefore:
Detailed problem analysis
What the “1270” really means
• “1270” identifies a push-button / plunger switch family launched in the ‘90s for small appliances, lighting gear and some industrial panels.
• The four suffix digits (1270.****) encode:
– Contact system (SPST-NO, SPST-NC, DPST, alternating, latching / momentary).
– Electrical rating e.g. 12 A(6) 250 V~ or 16 A (inductive).
– Terminal type (4.8 mm Faston, 6.3 mm Faston, PCB pin, screw).
– Actuator features (colour, illuminated, lock).
• Example table (extract from legacy datasheet):
Why “generic 1270” is not enough
✔ Same series ≠ same switch. A 1270.1301 will not drop-in for a 1270.2103 if the appliance needs double-pole isolation or latching action.
✔ Terminal spacing and panel cut-out differ between variants (19 mm vs 22 mm and 16 mm depth vs 25 mm if fitted with lamp).
✔ Safety approvals (EN 61058, UL 1054) are printed on the body – required to keep the appliance CE/UL compliant after repair.
How to select a compatible replacement
a. Identify
– Photograph the old switch from all sides; note the eight-digit code, current/voltage, contact diagram, plunger height, panel thickness.
– If marking is unreadable, reverse-engineer: count poles, test continuity, measure cut-out with a calliper, check if action is momentary or latching.
b. Check Marquardt supersession list
– Marquardt often maps an EOL 1270.xxxx to a 1662.xxxx or 1663.xxxx (same panel cut-out, higher lifetime, up-to-date approvals).
– For power-tool trigger variants occasionally mis-labelled 1270, the official successor is 1281.xxxx.
c. Cross-reference alternates if the original is unavailable:
– Marquardt 1663.0101 (DPST, 12 A, panel Ø19 mm, IP40)
– Marquardt 1939.3314 (DPST-latching rocker, 14 A, same window size)
– Schurter MSM19 or C&K K12S families as long as ratings and approvals match.
– Keep ≥20 % current head-room to account for inrush of inductive loads.
Verification checklist before installation
‑ Mechanical: panel cut-out ±0.2 mm, plunger protrusion, fixing method (snap-in vs nut), depth clearance.
‑ Electrical: pole/throw arrangement, current/voltage marking, dielectric strength ≥1500 V rms 1 min, temperature class.
‑ Safety: ENEC or UL mark identical to original region requirements.
‑ Function: momentary vs maintained, colour or illumination if user-visible.
Current information and trends
• Marquardt phased out several 12xx push-button lines between 2018–2022; distributors (Farnell, Mouser, TME) list them as “last-time-buy”, stock only a few codes.
• The 166x “Modular Push-Button” platform is the designated replacement—same 19 mm panel hole, up to 16 A/250 V~, optional LED ring, IP65 in sealed versions.
• For power-tool triggers, the company pushes the 1281, 1297 and 116x brushless-ready series with integrated soft-start / constant-speed modules.
• Eco-design directives (EU) favour switches with lower contact resistance and higher endurance → modern parts boast 100 k cycles vs 50 k of 1270.
Supporting explanations and details
• Why not simply over-dimension?
Inductive loads create high dI/dt; a 25 A HVAC contactor switch could be physically too big or have different actuation forces, making it unsafe in a small appliance housing.
• Faston 4.8 → 6.3 mm adapters exist (tin-plated copper sleeves) but increase contact resistance; better crimp new terminals.
• If illumination is required, note supply voltage (neon 230 V, LED 12/24 V) and polarity.
Ethical and legal aspects
• Repair maintains the product in service, reducing e-waste, but must not compromise conformity with Low Voltage Directive (LVD 2014/35/EU) or UL Listing.
• Substituting an unapproved or low-cost clone voids CE marking and may expose the owner to liability in case of fire or electric-shock accidents.
Practical guidelines
– exact 1270.xxxx (NOS) from surplus suppliers, or
– Marquardt 166x.xxxx recommended by the official cross-reference, or
– third-party equivalent with identical specs and approvals.
Potential challenges & mitigation
‐ Obsolete code: use distributors that offer “factory re-order” or consult Marquardt sales for MOQ production.
‐ Unclear wiring: compare schematic printed on body; if missing, continuity-probe each terminal pair in ON/OFF states.
Possible disclaimers or additional notes
• Information is drawn from the latest Marquardt public catalogue (rev. 2023-09) and distributor EOL notices; availability can change rapidly.
• Some 1270 variants were custom for OEMs; no commercial replacement is listed—contact the tool/appliance manufacturer in such cases.
Suggestions for further research
‐ Download the complete Marquardt “Push-Button Switches” PDF (products.marquardt.com → group 36).
‐ Check component cross-reference tools on Farnell or Mouser.
‐ For high-cycle industrial use, investigate solid-state or MOSFET based power switches complying with IEC 60947-4-3.
Brief summary
A safe, compatible replacement for a Marquardt 1270 switch hinges on the exact eight-digit code. Because the 1270 family is obsolete, Marquardt usually recommends its 166x or 193x push-button series (or 1281 for trigger-type tools). Identify the full code, consult the official cross-reference, and select a part that is identical in contact arrangement, ratings, dimensions and approvals. Never rely on the “1270” prefix alone, and always verify mechanical fit and safety compliance before putting the appliance back into service.