Murphy Switch VS2 Series User Manual

VS-96013B  
Revised 09-08  
Catalog Section 20  
00-02-0076  
Shock and Vibration Switch  
VS2  
VS2 Series  
Designed to Detect Shock/Vibration  
in 3-Planes of Motion  
Fully Adjustable  
Includes Magnetic Latching Feature  
Manual or Electric Reset  
VS2EX  
*
LISTED  
VS2EX  
Description  
Basic Operation  
Case: Base mount, explosion-proof aluminum  
alloy housing; meets NEMA 7/IP50 specifi-  
cations; Class I, Division 1, Groups C & D;  
UL and CSA listed*.  
The VS2 Series switches are shock sensitive  
mechanisms for shutdown of engine or elec-  
tric motor powered equipment. These  
Pushing the reset button moves the tripping  
latch into a magnetically held position.  
A shock/vibration will move the magnet  
beyond this holding position, thus freeing  
the spring loaded tripping latch to transfer  
the contacts and shutdown the machinery  
(see dimensional diagrams in the following  
pages for visual representation of parts).  
switches use a magnetic latch to ensure reli-  
able operation. Explosion-proof “EX” mod-  
els for hazardous locations are available.  
Snap-switches: 2-SPDT snap-switches; 5A  
@ 480 VAC;* 2A resistive, 1A inductive,  
up to 30 VDC.  
Applications  
Normal Operating Temperature: -40 to  
Ideal for use on engines, pumps, compres-  
sors, heat exchangers and pumping units, the  
VS2 Series can be used anywhere shutdown  
protection from damaging shock/vibration is  
desired. Switches are field adjustable to sen-  
sitivity required in each application.  
140°F (-40 to 60°C).  
Remote Reset Option  
(VS2EXR and VS2EXRB)  
The remote reset option includes a built-  
in electric solenoid which allows reset of  
tripped unit from a remote location.  
Available for 115 VAC or 24 VDC.  
VS2EXR  
Case: Same as VS2EX.  
Snap-switch: 1-SPDT snap-switch and reset  
coil; 5A @ 480 VAC;*2A resistive, 1A  
inductive, up to 30 VDC.  
Specifications  
Remote Reset : 115 VAC or 24 VDC (specify).  
Warranty  
VS2 and VS2C  
A limited warranty on materials and workmanship  
is given with this FW Murphy product. A copy of  
the warranty may be viewed or printed by going to  
Case: Equal to NEMA 3R. Suitable for  
non-hazardous areas.  
VS2EXRB  
Case: Explosion-proof aluminum alloy  
housing; rated Class I, Division 1, Group  
B hazardous areas.  
VS2: Base mount  
VS2C: C-clamp mount, includes 45 ft. (13.7 m)  
2-conductor cable, and 5 cable clamps.  
Snap-switch: 1-SPDT snap-switch with  
reset coil (option available for 2-SPDT  
switches); 5A @ 480 VAC; 2A resistive,  
1A inductive, up to 30 VDC.  
Contacts: SPDT-double make leaf contacts,  
5A @ 480 VAC.  
*CSA and UL listed with 480 VAC rating.  
Remote Reset: 115 VAC or 24 VDC (specify).  
VS-96013B page 1 of 4  
 
VS2EXR  
5-5/8 in. (143 mm)  
3 in.  
(76 mm)  
Mounting  
Holes  
• Remote Reset Feature  
• NEMA 7 Specifications  
• Snap-switch Contacts  
• TATTLETALE® Reset Button  
Model VS2EXR features an electric remote reset feature in addi-  
Remote  
Reset Coils  
5-1/4 in.  
(133 mm)  
Mounting  
Holes  
Permanent  
Magnet  
®
TATTLETALE  
Reset Push  
Button  
NC NO COM  
®
tion to the TATTLETALE reset button. The VS2EXR uses only  
6-3/8 in.  
(162 mm)  
Air Gap  
one SPDT snap-switch and is CSA and UL listed for Class I,  
Division 1, Groups C & D hazardous locations. It is constructed  
to meet NEMA 7 specifications.  
4-40 NC  
Screw Terminal  
3/8 in.  
(10 mm)  
4 places  
TOP VIEW  
(Cover removed)  
ELECTRICAL  
Remote  
Reset  
SPDT  
Snap-switch  
5 A @ 125–480 VAC  
1/2 A @ 125 VDC  
1/2 NPT  
Conduit  
Slotted  
1/4 A @ 250 VDC  
Sensitivity  
2 A Resistive 30 VDC  
1 A Inductive 30 VDC  
Adjustment  
COM  
N.O.  
N.C.  
4-7/8 in.  
(124 mm)  
MORE  
SENSITIVE  
LESS  
SENSITIVE  
115 VAC or 24 VDC (Specify)  
1-3/4 in.  
(44 mm)  
350 mA AC/DC  
SIDE VIEW  
10-5/8 in.  
(270 mm)  
8 in.  
(203 mm)  
VS2EXRB  
• For Group B Locations  
• Snap-switch Contacts  
• DPDT Feature Optional  
Model VS2EXRB is constructed for use in Class I, Division 1,  
Group B, hazardous locations. It has, as standard, a SPDT snap-  
switch and an electric remote reset. Option is available for DPDT  
snap-switch.  
10-3/16 in.  
9-1/8 in.  
(232 mm)  
Mounting  
Centers  
(259 mm)  
8-5/8 in.  
(219 mm)  
NC NO COM  
6 in.  
(152 mm)  
TOP VIEW  
(Cover removed)  
ELECTRICAL  
Remote  
Reset  
SPDT  
Snap-switch  
5 A @ 125–480 VAC  
1/2 A @ 125 VDC  
1/4 A @ 250 VDC  
2 A Resistive 30 VDC  
1 A Inductive 30 VDC  
6 in.  
(152 mm)  
1/2 NPT  
Conduit  
COM  
N.O.  
N.C.  
2-1/2 in.  
(64 mm)  
115 VAC or 24 VDC (Specify)  
350 mA AC/DC  
COM  
N.O.  
N.C.  
4-1/2 in.  
(114 mm)  
Mounting Centers  
Option SPDT  
Snap-switch (DPDT)  
SIDE VIEW  
VS-96013B page 3 of 4  
 
How to Order  
To order your VS2 Series model use the diagram below.  
Part number example: VS2EXR-24  
Service Parts  
When ordering service parts, specify both part number and descrip-  
tion in listing below.  
PART NO.  
VS2 and VSD2ECSCRIPTION  
___ – ___  
20-00-0030  
20-00-0031  
20-00-0032  
20-05-0021  
20-00-0261  
20-05-0465  
20-00-0137  
Movement assembly  
Glass and gasket assembly  
Base Model  
VS2  
Reset push button assembly  
Mounting clamp (VS2C)  
Cable clamp assembly (1 each) (VS2C)  
2-Conductor electrical cable, 45 feet (13.7 meters) (VS2C)  
5 clamps and 45 feet (13.7 meters) of cable (VS2C)  
VS2C  
VS2EX  
VS2EXR  
VS2EXRB  
VS2EX  
20-01-0091  
20-05-0087  
00-00-0309  
20-01-0090  
NOTE: Order C-clamp  
mounting kit as a separate  
line item for VS2EX and  
VS2EXR.  
Movement assembly  
Cover  
Cover gasket  
Snap-switch and insulator kit (1 switch per kit)  
prior to September 1, 1995.*  
Snap-switch and insulator kit (1 switch per kit) for models  
manufactured on September 1, 1995 or later.*  
C-clamp conversion mounting kit  
20-00-0288  
Options  
24 = 24 VDC reset coil on VS2EXR or VS2EXRB  
15 = 115 VAC reset coil on VS2EXR or VS2EXRB  
D = DPDT switch on VS2EXRB only  
LC = Less case  
20-00-0289  
VS2EXR  
20-00-0262  
20-05-0087  
00-00-0309  
20-01-0090  
Movement assembly  
LCC = Less cable and clamps on VS2C  
Cover  
Cover gasket  
Snap-switch and insulator kit (1 switch per kit)  
prior to September 1, 1995.*  
Snap-switch and insulator kit (1 switch per kit) for models  
manufactured on September 1, 1995 or later.*  
Reset solenoid assembly (115 VAC)  
Reset solenoid assembly (24 VDC)  
C-clamp conversion mounting kit  
20-00-0288  
Shipping Information  
20-00-0049  
20-00-0234  
20-00-0289  
VS2 and VS2C  
Shipping Weight:  
VS2: 2 lb 8 oz. (1.1 kg)  
VS2C: 7 lb (3.2 kg)  
VS2EXRB  
20-01-0090  
Snap-switch and insulator kit (1 switch per kit)  
prior to September 1, 1995.*  
Shipping Dimensions:  
VS2: 8-1/4 x 9-1/4 x 5 in. (210 x 235 x 127 mm)  
VS2C: 12 x 7 x 5-1/2 in. (305 x 178 x 140 mm)  
20-00-0288  
20-00-0057  
20-00-0058  
20-00-0287  
20-00-0290  
Snap-switch and insulator kit (1 switch per kit) for models  
manufactured on September 1, 1995 or later.*  
Inside snap-switch and insulator kit (1 switch per kit) for  
model VS2EXRB-D prior to September 1, 1995.*  
Outside snap-switch and insulator kit (1 switch per kit) for  
model VS2EXRB-D prior to September 1, 1995.*  
Outside snap-switch and insulator kit (1 switch per kit) for model  
VS2EXRB-D manufactured on September 1, 1995 or later.*  
Inside snap-switch and insulator kit (1 switch per kit) for model  
VS2EXRB-D manufactured on September 1, 1995 or later.*  
Adjustment shaft  
VS2EX  
Shipping Weight: 4 lb 8 oz. (2 kg)  
Shipping Dimensions: 8-1/4 x 9-1/4 x 5 in. (210 x 235 x 127 mm)  
VS2EXR  
Shipping Weight: 5 lb 8 oz. (2.2 kg)  
Shipping Dimensions: 8-1/4 x 9-1/4 x 5 in. (210 x 235 x 127 mm)  
20-05-0077  
20-00-0262  
20-00-0049  
20-00-0234  
VS2EXRB  
Movement assembly  
Shipping Weight: 17 lb 8 oz. (7.9 kg)  
Reset solenoid assembly (115 VAC)  
Reset solenoid assembly (24 VDC)  
Shipping Dimensions: 12 x 12 x 10 in. (305 x 305 x 254 mm)  
* Models with date 0895 and before use old switch. Dated 0995 after, use straight snap-switch  
arm, no rollers.  
FW MURPHY  
P.O. Box 470248  
Tulsa, Oklahoma 74147 USA  
+1 918 317 4100 Fax: +1 918 317 4266  
FRANK W. MURPHY, LTD  
Church Rd Laverstock  
Salisbury SP1 1QZ UK  
FW MURPHY INSTRUMENTS (HANGZHOU) CO. LTD  
77 23rd Street  
Hangzhou Economic & Technological Development Area  
Phone: +44 172 241 0055 Fax: +44 172 241 0088 Hangzhou, Zhejiang 310018 China  
Phone: +86 571 8788 6060 Fax: +86 571 8684 8878  
INDUSTRIAL PANEL DIVISION  
Fax: +1 918 317 4124  
FW MURPHY INTERNATIONAL TRADING (SHANGHAI) CO., LTD.  
Suite 1704, Tower B, City Center of Shanghai; 100 Zunyi Road  
Shanghai, 200051 China  
COMPUTRONIC CONTROLS, LTD  
41 - 43 Railway Terrace  
Nechells, Birmingham B7 5NG UK  
Phone: +44 121 327 8500 Fax: +44 121 327 8501 Web site: [email protected]  
Phone: +86 21 6237 2082 Fax: +86 21 6237 2083  
MURPHY POWER IGNITION  
CONTROL SYSTEMS & SERVICES DIVISION  
P.O. Box 1819  
Rosenberg, Texas 77471 USA  
Phone: +1 281 633 4500 Fax: +1 281 633 4588  
www.  
.com  
Printed in U.S.A.  
VS-96013B page 4 of 4  
 

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