Part number
6AV3688-3AF37-0AX0
Model no
KP8F PN
$631.35 Low stock Dispatch Planned dispatch date. We aim to ship within 1 business day. Depending on warehouse workload it can take 2–3 business days. · From Türkiye
SIMATIC HMI KP8F

Siemens 6AV3688-3AF37-0AX0 SIMATIC HMI KP8F PN 8-Key PROFIsafe IP65 Operator Panel

SIMATIC HMI KP8F PN key panel, 8 keys, PROFIsafe SIL3, PROFINET, IP65 front.

Rated current
0.3 A
Rated operational voltage
24; 24 can be looped through connector, interrupted when pulled V AC
Communication
PROFINET IO, PROFIsafe, IRT, MRP, 2x Industrial Ethernet
EAN
4025515079163
Description

About the KP8F PN

The Siemens SIMATIC HMI KP8F PN (6AV3688-3AF37-0AX0) is a fail-safe key panel with 8 short-stroke, multi-color-LED keys and 2 PROFINET interfaces with PROFIsafe, supporting up to 1x SIL 3 or 2x SIL 2 safety circuits. It runs from 24 V DC (0.3 A), rated IP65 at the front and IP20 at the rear.

Certifications & Standards

  • CE
  • cULus
  • RCM
  • KC
  • EAC

Selection Notes

The PROFIsafe rating of 1x SIL 3 or 2x SIL 2 (single-channel) is the deciding spec for a machine's e-stop or safety-key architecture: it lets this panel carry safety-relevant emergency-stop or enabling-switch functions directly over PROFINET rather than routing separate hardwired safety circuits back to a safety PLC. The 8 parameterizable short-stroke keys with 5-color LED feedback per key double as an operator status display, useful where a full graphic HMI is unnecessary and panel space is tight. ATEX Zone 2/22 and cULus Class I Division 2 approvals extend its use to hazardous-area machine perimeters, which is not the case for a standard (non-F) KP8 panel.

Applications

Machine-side operator stations needing safety-rated emergency stop, enabling, or mode-select functions integrated into PROFINET/PROFIsafe, such as press lines, packaging cells, and machine tool control panels, including hazardous-area (ATEX Zone 2/22) installations.

Specification

Full specification

139 values · Last verified 01 Nov 2026

General information 1

Product type designation KP8F PN

Control elements 7

With parameterizable keys Yes
Membrane keyboard: user-definable label membrane keys Yes
Function keys: Number of function keys 8
Short-stroke keys: Number of short-stroke keys 8
Expansions for operator control of the process: DP direct LEDs (LEDs as S7 output I/O) 8; Adjustable brightness
Expansions for operator control of the process: Number of color modes for LED 5; red, green, blue, yellow, white
Expansions for operator control of the process: Direct keys (keys as S7 input I/O) 8

Installation type/mounting 10

Mounting type Mounting clip
Mounting position vertical
Rack mounting No
Front mounting Yes; Compatible with Extension Units dimensions
Rail mounting No
Wall mounting/direct mounting No
Mounting in portrait format possible Yes
Mounting in landscape format possible Yes
maximum permissible angle of inclination without external ventilation 30°; To the front/rear
Number of slots for command devices and signaling units 0
Show all 139 specifications ↓ Show less ↑121 more values in Identification, Supply voltage, Input current, Digital inputs, Digital outputs, Interfaces, Protocols, Test commissioning functions, EMC, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Configuration, Functionality under WinCC (TIA Portal), Mechanics/material, Dimensions, Weights, Logistics.

Identification 10

Part number 6AV3688-3AF37-0AX0
Type designation KP8F PN
Brand Siemens
Condition New, factory sealed
Source Siemens and its authorised distributors
Warranty Manufacturer warranty
Lifecycle status Active, in production
EAN 4025515079163
ETIM class EC001415
eCl@ss 27330204

Supply voltage 4

Type of supply voltage DC
Rated value (DC) 24 V; 24 V can be looped through connector, interrupted when pulled
permissible range, lower limit (DC) 20.4 V
permissible range, upper limit (DC) 28.8 V

Input current 1

Current consumption (rated value) 0.3 A

Digital inputs 2

Number of digital inputs 8; total inputs and outputs max. 8 and 2x SIL 2 or 1x SIL 3
Input voltage: Rated value (DC) 24 V

Digital outputs 6

Number of digital outputs 8; Max. 8 inputs and outputs (total)
Short-circuit protection Yes
Switching capacity of the outputs: with resistive load, max. 100 mA
Output voltage: Rated value (DC) 24 V; Non-isolated
Total current of the outputs: Current per channel, max. 100 mA
Total current of the outputs: Current per group, max. 800 mA

Interfaces 4

Number of industrial Ethernet interfaces 2; For the construction of lines and rings without external switch
Number of PROFINET interfaces 2; Incl. switch
Industrial Ethernet: Industrial Ethernet status LED 2; Per port
Industrial Ethernet: Number of ports of the integrated switch 2; Per port

Protocols 26

PROFINET Yes; also 3rd party PLC
Supports protocol for PROFINET IO Yes
PROFINET CBA No
IRT Yes
PROFIsafe Yes; 1x SIL 3 (two-channel) or 2x SIL 2 (single-channel) emergency stop sensors
PROFIBUS No
EtherNet/IP No
MPI No
AS-Interface No
EIB/KNX No
Protocols (Ethernet): TCP/IP No
Redundancy mode Media redundancy: MRP Yes
Further protocols: AS-Interface Safety at Work No
Further protocols: CAN No
Further protocols: Data-Highway No
Further protocols: DeviceNet No
Further protocols: DeviceNet Safety No
Further protocols: Foundation Fieldbus No
Further protocols: INTERBUS No
Further protocols: INTERBUS-Safety No
Further protocols: Local Operating Network No
Further protocols: MODBUS No
Further protocols: SafetyBUS p No
Further protocols: SERCOS No
Further protocols: SUCOnet No
Further protocols: other bus systems No

Test commissioning functions 2

Illuminant test Yes; During switch on
Key and signal lamp test Yes; automatically when switching on

EMC 1

Emission of radio interference acc. to EN 55 011: Limit class A, for use in industrial areas Yes; Group 1, measured at a distance of 10 m

Degree and class of protection 4

IP (at the front) IP65
IP (rear) IP20
NEMA (front): Enclosure Type 4 at the front No
NEMA (front): Enclosure Type 4x at the front Yes; Incl. NEMA12

Standards, approvals, certificates 19

CE mark Yes
cULus Yes
RCM (formerly C-TICK) Yes
KC approval Yes
EAC (formerly Gost-R) Yes
CCC No; not necessary
Suitable for safety functions Yes
Use in hazardous areas: ATEX Zone 2 Yes
Use in hazardous areas: ATEX Zone 22 Yes
Use in hazardous areas: cULus Class I Zone 1 No
Use in hazardous areas: cULus Class I Zone 2, Division 2 Yes
Use in hazardous areas: FM Class I Division 2 Yes
Marine approval: Germanischer Lloyd (GL) No
Marine approval: American Bureau of Shipping (ABS) No
Marine approval: Bureau Veritas (BV) No
Marine approval: Det Norske Veritas (DNV) No
Marine approval: Lloyds Register of Shipping (LRS) No
Marine approval: Nippon Kaiji Kyokai (Class NK) No
Marine approval: Polski Rejestr Statkow (PRS) No

Ambient conditions 7

Ambient temperature during operation: min. 0 °C
Ambient temperature during operation: max. Operation (vertical installation) 55 °C
Ambient temperature during operation: For vertical installation, min. 0 °C
Ambient temperature during operation: At maximum tilt angle, min. 0 °C
Ambient temperature during storage/transportation: min. -20 °C
Ambient temperature during storage/transportation: max. 60 °C
Relative humidity: Operation, max. 95 %; no condensation

Configuration 2

Configuration software: STEP 7 Basic (TIA Portal) Yes
Configuration software: STEP 7 Professional (TIA Portal) Yes

Functionality under WinCC (TIA Portal) 16

Process coupling: S7-1200 Yes; with ET 200pro CPU and ET 200S CPU
Process coupling: S7-1500 Yes
Process coupling: S7-200 No
Process coupling: S7-300/400 Yes; with F-CPU: STEP 7 V11 SP1 (or higher) and Safety V11 (or higher) or SIMATIC STEP 7 Basic V11 (or higher)
Process coupling: LOGO! No
Process coupling: WinAC Yes
Process coupling: SINUMERIK No
Process coupling: SIMOTION No
Process coupling: Allen Bradley (EtherNet/IP) No
Process coupling: Allen Bradley (DF1) No
Process coupling: Mitsubishi (MC TCP/IP) No
Process coupling: Mitsubishi (FX) No
Process coupling: OMRON (FINS TCP) No
Process coupling: OMRON (Host Link) No
Process coupling: Modicon (Modbus TCP/IP) No
Process coupling: Modicon (Modbus RTU) No

Mechanics/material 5

Enclosure material (front): Plastic Yes
Enclosure material (front): Aluminum No
Enclosure material (front): Stainless steel No
Service life: Short-stroke keys (in switching cycles) 1 500 000
Service life: LEDs (ON period) 100 %

Dimensions 5

Width of the housing front 98 mm
Height of housing front 155 mm
Mounting cutout, width 67.7 mm; Max. thickness of mounting plate 2 - 6 mm
Mounting cutout, height 129.7 mm
mounting depth 49 mm; Incl. angled SIMATIC Ethernet connector

Weights 1

Weight (without packaging) 280 g

Logistics 6

Net weight 0.324 kg
Country of origin DE
Shipping weight 0.824 kg
Ships from Türkiye
Dispatch 13 Nov
Stock Low stock

Source: manufacturer data · Last verified: 01 Nov 2026

Documents

Documents for 6AV3688-3AF37-0AX0

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Ask us for the datasheet
Certifications

Certifications and standards

  • ATEX
  • CE mark
  • cULus
  • RCM (formerly C-TICK)
  • KC approval
  • EAC (formerly Gost-R)
  • Suitable for safety functions
Quick answers

Questions about the KP8F PN

What is the rated current of KP8F PN?

The rated current of KP8F PN is 0.3 A.

Which supply voltage is KP8F PN rated for?

The rated operational voltage of KP8F PN is 24; 24 can be looped through connector, interrupted when pulled V AC.

What is the HS code of KP8F PN for customs?

The tariff (HS) code on file for KP8F PN is 85371098.

What is the EAN of KP8F PN?

The EAN (GTIN) of KP8F PN is 4025515079163.

Where does KP8F PN ship from, and how fast?

KP8F PN ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.

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Series

Siemens SIMATIC HMI KP8F

Brand
Siemens
Series
SIMATIC HMI KP8F
$631.35 Low stock · 13 Nov
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KP8F PN

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Siemens · 6AV3688-3AF37-0AX0

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New and unused, in the manufacturer's factory-sealed packaging.
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Warranty
The manufacturer's warranty applies.
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