DVG-KV-M Series Explosion-Proof Mining Limit Switches

Product Description

DVG-KV-M series explosion-proof limit switches are used to switch electrical control, signaling, and position monitoring circuits for moving parts of mechanisms under the influence of control stops at specific points along the path of the controlled object in hazardous areas of industrial facilities. The limit switch operates by interrupting the electrical power supply circuit of the mechanism when it contacts the limit switch.

Advantages

Certified equipment ensuring safety and uninterrupted operation.
The mild steel body combines exceptional mechanical strength and corrosion resistance.
Wide range of switching mechanisms and different contact configurations.
Response speed from 0.5 milliseconds.
Mechanical strength of the head from 5 million cycles.
High degree of protection against moisture and dust IP66.

Frequently bought together

KNV for Unarmored Cable

KOV for Armored Cable

KNVM for Unarmored Cable in Flexible Metal Conduits

KNVTV for Unarmored Cable, Female Thread

KOVTV for Armored Cable, Female Thread

Compliance with standards

GOST 31610.0-2014 (IEC 60079-0:2011)

GOST IEC 60079-1-2013

GOST 31610.11-2014 (IEC 60079-11:2011)

Certificates

EAEU RU C-RU.NK51.V.00014/25

EAEU N RU D-RU.RA09.11729/25

ROSS RU.FB01.N00171/26

ROSS RU C-RU.MY62.V.00097/23

Group 1 of technical supervision of RMRS

Certificate No. 13-11.1-6.4.1-1784

RU.OS.VSST 0221-04.2026

TU 27.12.31-037-72453807-2017

GOST R ISO 9001-2015

Markings

Marking of mining equipment

РВ Ex db I Mb
РО Ex ia I Ma
РН1/РН2

Degree of protection

IP66

Installation

Category I for mine gas and dust;
Underground workings hazardous due to gas (methane) and coal dust;

Technical data

Ambient temperature, °C

-60...+65

Maximum voltage, V

~400 / ⎓250

Nominal voltage, V

~24V – 10A
~120V – 6A
~230V – 3.1A
~240V – 3A
~400V – 1.8A
⎓24V - 2.8A
⎓125V - 0.55A
⎓250V - 0.27A

Current frequency, Hz

50/60

Threads on connecting holes

Metric M20x1.5 GOST 24705-2004

Coating

Antistatic polymer-epoxy coating, friction-proof, spark-proof, resistant to working environments and ionizing radiation. Color RAL 7035

Enclosure material

Low-carbon structural steel GOST 380-2005

Protection class against electric shock

Weight, kg

Climatic category

NF1 (as required NF2, NF3, NF4, NF5, HL1, HL2, HL3, HL5, T1, T2, T3, T5, MU1, MU2, MU3, MU4, W2.1 , W5 )

Overall and connection dimensions of DVG-KV

Options

Options, accessories and versions

Marking

Painting the outer surface in the color according to the customer's requirements

/RAL (code)

Cable according to customer's requirements, XX - cable length in meters

/KHH

Marine version

/MORE

Earthquake-resistant design

/MSHK-64

Non-explosion-proof design

/PROM

River execution

/RIVER

Mining normal design

/RN

Option Correspondence Table

	PROM	SEA	RIVER	MSHK-64	RN	KXX	RAL (code)
PROM		+	+	+	+	+	+
SEA	+		+	+	-	+	+
RIVER	+	+		+	-	+	+
MSHK-64	+	+	+		+	+	+
RN	+	-	-	+		+	+
KXX	+	+	+	+	+		+
RAL (code)	+	+	+	+	+	+

TYPICAL EQUIPMENTS OF DVG-KV-M

Illustration
Model	Side rod made of steel DVG-KV-M-E21	Side rod with vertical roller Ø 12 mm DVG-KV-M-E22	Unidirectional lever with roller Ø 22 mm DVG-KV-M-E31: thermoplastic roller DVG-KV-M-E32: steel roller	Lever with roller Ø 22 mm DVG-KV-M-E41: nylon roller DVG-KV-M-E42: stainless steel roller
Maximum response speed, ms	0,5	0,5	1,5	1,5
K1 instantaneous contact 1H0+1H3	DVG-KV-M-E21K1	DVG-KV-M-E22K1	DVG-KV-M-E3.K1	DVG-KV-M-E4.K1
K2 contact with opening, before closing 1H0+1H3	DVG-KV-M-E21K2	DVG-KV-M-E22K2	DVG-KV-M-E3.K2	DVG-KV-M-E4.K2
K3 contact with closing, before opening 1H0+1H3	DVG-KV-M-E21K3	DVG-KV-M-E22K3	DVG-KV-M-E3.K3	DVG-KV-M-E4.K3
K4 action contact delayed 2H3	DVG-KV-M-E21K4	DVG-KV-M-E22K4	DVG-KV-M-E3.K4	DVG-KV-M-E4.K4
K5 action contact slow- 2H0	DVG-KV-M-E21K5	DVG-KV-M-E22K5	DVG-KV-M-E3.K5	DVG-KV-M-E4.K5
Dimensions, mm

Illustration
Model	Adjustable lever with roller Ø 19 mm DVG-KV-M-E51: nylon roller DVG-KV-M-E52: stainless steel roller	Stainless steel spring lever DVG-KV-M-E62	Adjustable lever steel Ø 3 mm DVG-KV-M-E71	Adjustable thermoplastic lever Ø 6 mm DVG-KV-M-E73
Maximum response speed, ms	1,5	1,5	1,5	1,5
K1 instantaneous contact 1H0+1H3	DVG-KV-M-E5.K1	DVG-KV-M-E62K1	DVG-KV-M-E71K1	DVG-KV-M-E73K1
K2 contact with opening, before closing 1H0+1H3	DVG-KV-M-E5.K2	DVG-KV-M-E62K2	DVG-KV-M-E71K2	DVG-KV-M-E73K2
K3 contact with closing, before opening 1H0+1H3	DVG-KV-M-E5.K3	DVG-KV-M-E62K3	DVG-KV-M-E71K3	DVG-KV-M-E73K3
K4 action contact delayed 2H3	DVG-KV-M-E5.K4	DVG-KV_E62K4	DVG-KV-M-E71K4	DVG-KV-M-E73K4
K5 action contact slow- 2H0	DVG-KV-M-E5.K5	DVG-KV-M-E62K5	DVG-KV-M-E71K5	DVG-KV-M-E73K5
Dimensions, mm

Illustration
Model	Smooth rod made of steel DVG-KV-M-E11	Steel plunger with ball bearing DVG-KV-M-E12	Rod with roller Ø 12 mm DVG-KV-M-E13
Maximum response speed, ms	0,5	0,5	0,5
K1 instantaneous contact 1H0+1H3	DVG-KV-M-E11K1	DVG-KV-M-E12K1	DVG-KV-M-E13K1
K2 contact with opening, before closing 1H0+1H3	DVG-KV-M-E11K2	DVG-KV-M-E12K2	DVG-KV-M-E13K2
K3 contact with closing, before opening 1H0+1H3	DVG-KV-M-E11K3	DVG-KV-M-E12K3	DVG-KV-M-E13K3
K4 action contact delayed 2H3	DVG-KV-M-E11K4	DVG-KV-M-E12K4	DVG-KV-M-E13K4
K5 action contact slow- 2H0	DVG-KV-M-E11K5	DVG-KV-M-E12K5	DVG-KV-M-E13K5
Dimensions, mm

TYPICAL EQUIPMENTS OF DVG-KV-M

Illustration
Model	Side rod made of steel DVG-KV-M-E21	Side rod with vertical roller Ø 12 mm DVG-KV-M-E22	Unidirectional lever with roller Ø 22 mm DVG-KV-M-E31: thermoplastic roller DVG-KV-M-E32: steel roller	Lever with roller Ø 22 mm DVG-KV-M-E41: nylon roller DVG-KV-M-E42: stainless steel roller
Maximum response speed, ms	0,5	0,5	1,5	1,5
K1 instantaneous contact 1H0+1H3	DVG-KV-M-E21K1	DVG-KV-M-E22K1	DVG-KV-M-E3.K1	DVG-KV-M-E4.K1
K2 contact with opening, before closing 1H0+1H3	DVG-KV-M-E21K2	DVG-KV-M-E22K2	DVG-KV-M-E3.K2	DVG-KV-M-E4.K2
K3 contact with closing, before opening 1H0+1H3	DVG-KV-M-E21K3	DVG-KV-M-E22K3	DVG-KV-M-E3.K3	DVG-KV-M-E4.K3
K4 action contact delayed 2H3	DVG-KV-M-E21K4	DVG-KV-M-E22K4	DVG-KV-M-E3.K4	DVG-KV-M-E4.K4
K5 action contact slow- 2H0	DVG-KV-M-E21K5	DVG-KV-M-E22K5	DVG-KV-M-E3.K5	DVG-KV-M-E4.K5
Dimensions, mm

Illustration
Model	Adjustable lever with roller Ø 19 mm DVG-KV-M-E51: nylon roller DVG-KV-M-E52: stainless steel roller	Stainless steel spring lever DVG-KV-M-E62	Adjustable lever steel Ø 3 mm DVG-KV-M-E71	Adjustable thermoplastic lever Ø 6 mm DVG-KV-M-E73
Maximum response speed, ms	1,5	1,5	1,5	1,5
K1 instantaneous contact 1H0+1H3	DVG-KV-M-E5.K1	DVG-KV-M-E62K1	DVG-KV-M-E71K1	DVG-KV-M-E73K1
K2 contact with opening, before closing 1H0+1H3	DVG-KV-M-E5.K2	DVG-KV-M-E62K2	DVG-KV-M-E71K2	DVG-KV-M-E73K2
K3 contact with closing, before opening 1H0+1H3	DVG-KV-M-E5.K3	DVG-KV-M-E62K3	DVG-KV-M-E71K3	DVG-KV-M-E73K3
K4 action contact delayed 2H3	DVG-KV-M-E5.K4	DVG-KV_E62K4	DVG-KV-M-E71K4	DVG-KV-M-E73K4
K5 action contact slow- 2H0	DVG-KV-M-E5.K5	DVG-KV-M-E62K5	DVG-KV-M-E71K5	DVG-KV-M-E73K5
Dimensions, mm

Illustration
Model	Smooth rod made of steel DVG-KV-M-E11	Steel plunger with ball bearing DVG-KV-M-E12	Rod with roller Ø 12 mm DVG-KV-M-E13
Maximum response speed, ms	0,5	0,5	0,5
K1 instantaneous contact 1H0+1H3	DVG-KV-M-E11K1	DVG-KV-M-E12K1	DVG-KV-M-E13K1
K2 contact with opening, before closing 1H0+1H3	DVG-KV-M-E11K2	DVG-KV-M-E12K2	DVG-KV-M-E13K2
K3 contact with closing, before opening 1H0+1H3	DVG-KV-M-E11K3	DVG-KV-M-E12K3	DVG-KV-M-E13K3
K4 action contact delayed 2H3	DVG-KV-M-E11K4	DVG-KV-M-E12K4	DVG-KV-M-E13K4
K5 action contact slow- 2H0	DVG-KV-M-E11K5	DVG-KV-M-E12K5	DVG-KV-M-E13K5
Dimensions, mm

Functional diagrams of contacts with instantaneous action NO + NC

Diagram

A - Maximum actuator stroke in millimeters or degrees.
B - Contact actuation stroke.
(A) - Contact actuation point.
C - Contact repeat stroke.
D - Differential stroke = B - C.
(P) - Point from which full opening is ensured.

Linear movement (plunger/rod)

1 - Contact reset point.
A - Maximum plunger/rod stroke in millimeters.
B - Contact actuation stroke.
(A) - Contact actuation point.
C - Contact return stroke.
D - Differential stroke = B - C.
(P) - Point from which full opening is ensured.

Pivot movement (lever)

Functional diagrams of slow-action contacts NO+NC with delay before operation

Diagram

A - Maximum actuator travel in millimeters or degrees.
B - Contact engagement and reset 21-22.
(A) - Tripping and reset points 13-14.
C - Contact engagement and reset 13-14.
(P) - Point from which full opening is ensured.

Linear movement (plunger/rod)

1 - Tripping and reset points 21-22.
A - Maximum actuator stroke in millimetres.
B - Tripping and reset stroke of contact 21-22.
(A) - Tripping and reset points 13-14.
C - Tripping and reset stroke of contact 13-14.
(P) - Point from which full opening is ensured.

Pivot movement (lever)

1 - Tripping and reset points 21-22.
A - Maximum actuator stroke in degrees.
B - Tripping and reset stroke of contact 21-22.
(A) - Tripping and reset points 13-14.
C - Tripping and reset stroke of contact 13-14.
(P) - Point from which full opening is ensured.

DESIGN

The housing of explosion-proof limit switches DVG-KV is made of aluminum alloy.

The DVG-KV explosion-proof limit switches are constructed of aluminum alloy and powder coated with RAL7035 gray epoxy paint. The housing and cover screws are stainless steel.

The housing is equipped with an external and internal grounding bolt. Silicone seals are installed at the connections between the housing, the cover, and the head. The limit switch is mounted via two 5.4 x 8 mm mounting holes.

The contact block is removed from the device along with the housing cover, ensuring maximum ease of installation. The contact blocks are made of reinforced nylon with various contact types and are equipped with an adjustment screw for precise setting of the trip point. The contacts are numbered, indicate the contact type, and have an identification code.

Explosion-proof limit switches DVG-KV use various types of interchangeable heads.

DVG-KV explosion-proof limit switches use various types of interchangeable heads. All heads are equipped with captive locking screws. There are no specific rules governing the use of a particular head: the choice of head is determined by the customer's needs.

It is possible to change the operating mode of the mechanical part directly on the head.

Possibility of positioning the pusher in 5° or 45° increments in the vertical plane, and in 90° increments in the horizontal plane.

Submit request

Configurator

Pusher type number:
Contact diagram number:
Options, accessories and versions
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Marking for order
DVG-KV-M-TU 27.12.31-037-72453807-2017

Application details

Quantity

Additional description

0 / 300

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Model Breakdown

DVG - KV - M - 1X1 - 2X2 - 3X3 / 4X4 – TU 27.12.31-037-72453807-2017

1X - Pusher type number

Product Description

Advantages

Frequently bought together

Compliance with standards

Certificates

Markings

Technical data

Design parameters

Options

Additional information

Functional diagrams of contacts with instantaneous action NO + NC

Diagram

Linear movement (plunger/rod)

Pivot movement (lever)

Functional diagrams of slow-action contacts NO+NC with delay before operation

Diagram

Linear movement (plunger/rod)

Pivot movement (lever)

DESIGN

Submit request

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