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 Square D > On-line Catalog > Products > Relays and Timers > Pneumatic Timers
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Pneumatic Timers

Class 9050-Types B and C

Three minute timing ±10% repeat accuracy
Five minute timing ±12% repeat accuracy
On and Off Delay, convertible
SPDT or DPDT timed contacts
1 or 2 SPDT instantaneous contacts
Optional micrometer dial


Mode of
Operation
Number of Contacts
AC Operated
DC Operated
Time Delay
Instantaneous
Open Type
Price
Open Type
Price
N.O.
N.C.
N.O.
N.C.
On Delay  
Convertible  
1  
1  
0  
1  
2  
0  
1  
2  
BO1Ea
BO2Ea
BO3Ea
$569.  
623.  
692.  
CO1Ea
CO2Ea
CO5Ea
$623.  
692.  
737.  
2  
2  
0  
1  
2  
0  
1  
2  
BO21Ea
BO22Ea
BO23Ea
737.  
797.  
854.  
CO21Ea
CO22Ea
CO25Ea
797.  
854.  
864.  
Off Delay  
Convertible  
1  
1  
0  
1  
2  
0  
1  
2  
BO1Da
BO2Da
BO3Da
569.  
623.  
692.  
CO1Da
CO2Da
CO5Da
623.  
692.  
737.  
2  
2  
0  
1  
2  
0  
1  
2  
BO21Da
BO22Da
BO23Da
737.  
797.  
854.  
CO21Da
CO22Da
CO25Da
797.  
854.  
864.  

a Voltage code must be specified to order this product. Refer to standard voltage codes listed on page 21-26 and insert as shown in How To Order below.

Modification Kits
Class
Type
For Timing Relay
Description
Price
9991  
BCG
Type B and C  
Separate NEMA Type 1 General Purpose Enclosure
$95.00  
9999  
R4
R5
Type B  
Type C  
Instantaneous Contactb
Instantaneous Contactb
52.00  
52.00  
9999  
K5
Type C—D  
Parts required to change Type C timing relay from Off Delay to On Delay
16.70  
9999  
K6
Type C—E  
Parts required to change Type C timing relay from On Delay to Off Delay
11.90  

b Instantaneous contact kits contain a snap switch, mounting bracket and screws for field installation. A second instantaneous contact kit can be added to a timing relay with only one instantaneous contact.

Contact Ratings
Type
AC Ratings
DC Ratings
Volts
Inductive
35% Power Factor
Resistive
75% Power Factor
Volts
Inductive
and Resistive
Make
Break
Continuous
Amperes
Make, Break
and Continuous
Amperes
Make and Break Amperes
Continuous
Amperes
A
VA
A
VA
Single Throw
Double Throw
Ind.
Res.
Ind.
Res.
Type B
SPDT
Timed
Contacts  
120
240
480
600  
40
20
10
8  
. . .
. . .
. . .
. . .  
15
10
6
5  
. . .
. . .
. . .
. . .  
15
15
15
15  
15
15
15
15  
115
230
600  
0.5
0.25
0.05  
0.5
0.25
0.05  
0.25
0.1
. . .  
0.25
0.1
. . .  
15
15
15  
Type C
SPDT
Timed
Contacts  
120
240
480
600  
40
20
10
8  
. . .
. . .
. . .
. . .  
15
10
6
5  
. . .
. . .
. . .
. . .  
15
15
15
15  
15
15
15
15  
115
230
600  
2.0
0.5
0.1  
2.0
0.5
0.1  
0.5
0.2
0.02  
0.5
0.2
0.02  
15
15
15  
Types B and C
DPDT
Timed
Contacts  
120
240
480
600  
30
15
7.5
6  
3600
3600
3600
3600  
3
1.5
0.75
0.6  
360
360
360
360  
10
10
10
10  
10
10
10
10  
115
230
600  
1.0
0.3
0.1  
1.0
0.3
0.1  
0.2
0.1
. . .  
0.2
0.1
. . .  
10
10
10  
Type B (AC only)
and Type C
Instantaneous
Contacts  
120
240
480
600  
60
30
15
12  
7200
7200
7200
7200  
6
3
1.5
1.2  
720
720
720
720  
10
10
10
10  
10
10
10
10  
115
230
600  
1.1
0.25
0.05  
1.1
0.55
0.2  
0.2
0.1
. . .  
0.2
0.1
. . .  
10
10
10  

Timing Modes: On Delay and Off Delay, convertible. On Delay types can be wired for interval- momentary or maintained start and repeat cycle (sequencing, using two devices).
Timed Output Contacts: SPDT or DPDT snap switch. Contacts of each pole must be used on same polarity.
Instantaneous Output Contacts: 1 or 2 SPDT snap switches. Contacts of each pole must be used on same polarity.
Overlapping Contacts: On Delay timers with instantaneous contacts provide overlap between the instantaneous contact and the timed contact on the reset (non-timing) stroke. For example, the N.C. instantaneous contact will close before the N.O. timed contact opens on the reset stroke.
Repeat Accuracy:
Under constant temperature (Per NEMA Standard ICS 5-1993):
±10% to 3 minutes max.
±12% to 5 minutes max.
±40% to 20 minutes max.
Timing Range: 0.05 second to 3 minutes for timers without micrometer dial. For timers with a micrometer dial the timing range is 0.2 second to 3 minutes. Note: most types B and C timing relays without micrometer dial can be adjusted to 20 minutes. Due to manufacturing tolerances not every timer can be guaranteed adjustable from 3 to 20 minutes. For timers with micrometer dial consult local Square D Sales Office.
Reset Time: 34 ms average
Operating Temperature Range: 20° C to 40° C (68° F to 104° F)
Operating Voltages/Voltage Range:
Type B—6 through 600 volts AC, +10%, -15% of nominal.
Type C—6 through 250 volts DC, +10%, -20% of nominal.

Replacement Coils for 9050B Timers:
Coil Voltage
Coil Part Number
Coil (Volt-Amperes) c
Price
60 Hz
50 Hz
Inrush
60 Hz
Inrush
50 Hz
Sealed
24 Vac  
3101740033
3101740034
165  
155  
27  
$71.  
120 Vac  
3101740054
3101740055
208 Vac  
3101740061
. . .  
220 Vac  
3101740061
3101740063
240 Vac  
3101740063
3101740064
277 Vac  
3101740065
. . .  
440 Vac  
3101740070
3101740072
480 Vac  
3101740072
3101740073
550 Vac  
3101740073
3101740075
600 Vac  
3101740075
3101740076

c 6 to 24 Vac coils have VA ratings 120% of the values shown

Replacement Coils for 9050C Timers:
Coil Voltage
Coil Part Number
Coil Burden Watts
Price
6 Vdc  
3101840022
14  
$227.  
12 Vdc  
3101840031
24 Vdc  
3101840040
48 Vdc  
3101840049
115/125 Vdc  
3101840061
230/250 Vdc  
3101840070



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