Mechanical pressure switch

Relative and differential
pressure switch
Type 630
Differential pressure, vacuum and overpressure switches of type
series 630 are suitable for monitoring neutral and slightly aggressive liquids and gases. Switching element isolated from medium.
Ideal for use as flow monitor in sanitary piping/ heating installations or for level monitoring in general in process technology
applications. Extremely rugged construction with high functionality due to10/20 bar safety margin in both pressure chambres.

Pressure range
6 ... 5500 mbar

+ High overpressure safety margin at both connections(P1 + P2) up to 10/20 bar+ Funcionally simple, rugged mechanics with highoperating reliability+ Also for slightly aggressive liquids and gases+ Specially economical version with switching points
adjusted in the factory+ Repeatability up to < ± 0.4 mbar

Pressure and flow

Huba Control Type 630 | Technical data subject to change | Edition 09/2020

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Technical overview
Pressure range
Relative und differential

6 ... 5500 mbar

Operating conditions
MediumLiquids and neutral gases
0 ... +80 ºC-10 ... +80 ºC-10 ... +80 ºC-40 ... +80 ºC+65 ºC-40 ... +80 ºC
10 bar
20 bar
30 bar> 6 mbar> 3 mbar

NBR-based
FPM
EPDM
Q (Silicone)
AmbientStorage< 200 mbar
> 200 mbar

Temperature

Tolerable overload and max. tolerable system pressure (P1 > P2)
Rupture pressure
Lowest turn-on pressure
Smallest switching difference
Materials in contact with the medium

NBR based
EPDM
FPM
Silicone
Anodized aluminium
Brass
Brass chemically nickel plated
X14CrMoS17
1.4104
X5CrNi18-10
1.4301
X10CrNi18-8
1.4310
Steel category A2 for screws
Polyacetate-C, Polyamide

DiaphragmCase

Other components

Contact material / Loading
Nominal voltage, type of current
Nominal current for resistive loading
Nominal current for motor loading
Contact system
Service life

250 VAC
1A0.5 A
Changeover contact
106 switching cycles 1)

MechanicallyProtection standard
Without coverWith cover (PG11) 2)
With cover (PG9) 3)

IP 00
IP 54
IP 65

Repeatability±5% of the switching point±10% of the switching pointwith diaphragm NBR-based / silicone
with diaphragm FPM / EPDM minimum ±0.8 mbar

minimum ±0.4 mbar

Electrical connections
Screw terminals (Option)
Tab connectors (AMP) 6.3 mm
Cable gland PG9 / PG11with cover

Pressure connections
ThreadStraight screwed connection
Screwed Socket

G⅛G⅛G⅛Zinc plated steel with NBR seal for pipe (Ø 6 mm)
CuZn nickel plated for tube (Ø 6 mm)

Mounting instructions
For switching points calibrated in the factory
Indicate installation arrangement
In case of liquid media
Connections downRemark:
By changing the mounting position the switching points also change. The adjustment ranges are in relation with the mounting position.
WeightWith aluminium baseWith base brass / nickel-plated brass~ 380 g~ 1000 g

Packaging
Single packaging in cardboard boxes

Legend to cross-section drawing
1234P1P21)

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Admissible switching difference has to be concidered

Pressure and flow2)

For installation arrangement electrical connections upward3)

Pressure case
Diaphragm
Vent
Permanent magnet
Higher pressure / lower vacuum
Lower pressure / higher vacuum

With O-Ring

Huba Control Type 630 | Technical data subject to change | Edition 09/2020

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Order code selection table
Presssure range 1)

Contact material

Pressure case

Diaphragm materialWith cover (plastic) (Fig.1) (PG11)
With spec. cover (Fig.2) (PG9)

Switching points(optional)

34567630. X X X X X X X

6 ... 20 mbar
15 ... 60 mbar
40 ... 200 mbar
150 ... 1000 mbar
1 ...
3 bar
2 ... 5.5 bar
AgCdO
Anodized aluminium, black
Brass
Nickelplated brass
Anodized aluminium, black
Brass
Nickel plated brass
Anodized aluminium, black
Brass
Nickel-plated brass
NBR
FPM
EPDM
Q (silicone)
Without cover

Cover PG9 on side / Bracket

2

Two factory set switching points
One factory set switching point high
One factory set switching point low999999with straight screwed connection G1/8 for pipe ø 6 mmwith straight screwed connection G1/8 for pipe ø 6 mmwith straight screwed connection G1/8 for pipe ø 6 mmwith screwed socket G⅛ for tube ø 6 mmwith screwed socket G⅛ for tube ø 6 mmwith screwed socket G⅛ for tube ø 6 mmwithout bracket
with bracket type A
with bracket type B
without bracket
with bracket type A
with bracket type B
without bracket
with bracket type A
with bracket type B(please specify on order e.g.: W10/8mbar)(please specify on order e.g.: R25mbar)(please specify on order e.g.: U100mbar)

12345600123456780123012345678WRUSetting ranges1)

6 ... 20 mbar

15 ... 60 mbar

40 ... 200 mbar

Δp (mbar)Δp (mbar)Δp (mbar)

150 ... 1000 mbar

1000 ... 3000 mbar (1... 3 bar)2000 ... 5500 mbar (2 ... 5.5 bar)Δp (mbar)Δp (mbar)Δp (mbar)

Other pressure range on request

Pressure and flow

Huba Control Type 630 | Technical data subject to change | Edition 09/2020

3/5Dimensions in mm / Electrical connections

1 Feeder (COM)
2 NO contact
3 NC contact

P1
P2Fig. 1

Straight screwed connector G ⅛

Fig. 2Type A

Type B

Screwed Socket G ⅛

Sealing NBR

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Pressure and flow

Huba Control Type 630 | Technical data subject to change | Edition 09/2020

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