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Short circuit protection 

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UL Listed for US and Canada 

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FCC Class B 

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CE Mark 

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LED operational indicator 

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EMI filtering 

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94.3% efficiency green technology 

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Auto recovery overload protection 

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3 second power-up delay to drive large capacitive 

 

loads up to 40K µF 

 

Nominal Specifications

 

General 

Efficiency: 

94.3% Min @ 1A load 

 

 90% @ 4A full load 

Dimensions: 

8.45"H x 4.70"W x 2.35"D 

 

(21.46cm H x 11.94cm W x 5.97cm D) 

Weight: 

3.5 lbs. (1.59 kg) 

Input - VP-4124

  

Voltage:   

115VAC 

Frequency: 

60 Hertz 

Rated Power: 

110 Watts 

Full Load Line Current:   

1.0A 

Input - VP-4124-E

 

Voltage: 

230VAC 

Frequency: 

50 Hertz 

Rated Power: 

110 Watts 

Full Load Line Current:   

0.5A 

Output

 

Rated Power: 

100 Watts 

Voltage: 

24 Volts 

Current: 

4 Amps, 2 - 2A outputs  

Fusing: 

Two - 2A Auto-reset polyswitch fuses  

Ripple & Noise: 

Less than 0.2% RMS 

 
Environmental

 

Operating Temperature: 

0 to +40

o

Storage Temperature: 

-40C

o

 to +85

o

Cooling: 

Free Air Convection 

Humidity: 

10 to 90% (non-condensing) 

Shock: 

10 G 

  

Precautionary Notes:

 

 
 

INSTALLATION 

Mounting 

The VP-4124 and VP-4124-E are designed for 

wall 

mounting only

.  The unit should be mounted within 7 

feet of an AC receptacle. 
 
Screw mounting plate to wall and position power 
supply on mounting plate via the mounting slots. 
 
See pages 5 and 6 for mounting instructions.  
 

Connections

 

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Connections to Valcom page control units are 
shown in Figure 1. 

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When using the VP-4124 or VP-4124-E as a 
-24VDC power supply with Valcom page 
equipment, a strap may be added from the local 
ground terminal to both of the "+" outputs to 
provide an AC ground reference. 

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When installing Valcom one-way amplified horns, 
connect the white and black wires of the horn to 
the power supply " -" and "+" terminals 
respectively. 

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When installing Valcom one-way speakers, 
connect the " -24VDC" and "GND" terminals of 
the speaker to the " -" and "+" terminals 
respectively. 

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Plug power supply into wall outlet. 

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Power supply activates after 3 seconds delay. 

 

NOTE:  Each -24VDC screw terminal is fused by a 2 
Amp polyswitch automatic.  Therefore, when 
connecting equipment to this power supply, the load 
should be distributed between the (2) 2 Amp output 
terminals (within 1.5 Amps) and each load should 
not exceed 2 Amps. 

 

TECHNICAL ASSISTANCE 

When trouble is reported, verify the unit is properly 
connected and there are no broken connections 
leading to this unit.  Assistance in troubleshooting is 
available from the factory.  When calling, you should 
have a VOM and a test set and call from the job site.  
Call (540) 563-2000 for Technical Support or call (540) 
767-1555 for Valcom 24-hour Faxback System or visit 
our website at http://www.valcom.com. 
 
Valcom equipment is not field repairable.  Valcom, Inc. 
maintains service facilities in Roanoke, VA.  Should 
repairs be necessary, attach a tag to the unit clearly 
stating company name, address, phone number, 
contact person and the nature of the problem.  Send 
the unit to: 

Valcom, Inc. 

CAUTION:  To reduce the risk of electric shock,

Do not remove cover.

No user serviceable parts inside.

Refer servicing to qualified service personnel.

This symbol indicates that dangerous
voltage constituting a risk of electric
shock is present within this unit.

This symbol indicates that there are
important operating and maintenance
instructions in the literature accompanying
this unit.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

 

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