AP17-1-64F-302

## AP/UP, AP/MIL Series Magnetic Circuit Protectors 

|Introduction|**|**77|
|---|---|
|Single Pole|**|**78|
|Multi-Pole|**|**79|
|Configurations|**|**81|
|Operating Characteristics|**|**82|
|Delay Curves|**|**83|
|Specifications|**|**84|
|Decision Tables|**|**85|



## AIRPAX:© | **AP/UP, AP/MIL Series** Hydraulic Magnetic Circuit Protectors 

## **INTRODUCTION** 

The Airpax™ AP series are fully sealed, magnetic circuit protectors that combine power switching and accurate, reliable circuit protection with inverse time delays and trip free features. 

Unlike a thermal circuit protector, the AP does not change its trip current over a wide temperature span. In addition, the AP magnetic circuit protector is available in either DC, 50/60Hz or 400Hz versions and with various delays to match the protector to specific application requirements. 

One of the most important features of this protector is the “trip free” action, which means the circuit will not remain closed in the presence of an overload even though the handle is held in the ON position. The delay mechanism senses the fault and the contacts open. 

Waterproof panel integrity is provided by an “O” ring bushing seal and a silicon rubber gland within the bushing/handle assembly. 

Typical applications include communication, navigation and aircraft instrumentation, radar and power supplies. 

The Airpax™ UP circuit protector, with UL recognition and CSA certification, is essentially the same as the AP in construction and operating principle. It is approved for operation at 50 volts DC to 20 amperes, 120 volts 50/60Hz to 15 amperes and 240 volts 50/60Hz to 7.5 amperes. The UP circuit protector is available in single pole units only, due to UL and CSA creepage specifications and the wide glass terminals utilized. 

The Airpax™ AP-MIL protectors are produced in accordance with MIL-PRF-39019 and the pertinent specification sheets, are subjected to an exacting production and test program to maintain their Qualified Products Listing (QPL). One, two and three pole series trip units, with or without auxiliary contacts, have been accepted for this listing. Refer to specification sheets MIL-PRF-39019/1 through 6 for the application government designations. The AIRPAX cage code number is 81541. 

**77** _**AP/UP, AP/MIL Series - Introduction**_ 

_http://airpax.sensata.com/_ 

## SINGLE POLE CIRCUIT PROTECTORS 

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1.605 MA X. .380 MAX.<br>.312 [  40.77]     [9.65]<br>[7.92]<br>  .625 MAX.<br>[15.88]<br>22º<br>.875<br>[ 22.23]<br>11º<br>RUBBER “O” RING<br>LOCK RING<br>ON-OFF PLATE<br>(OPTIONAL)<br>LOCKWASHER<br>3/8 -32 NEF-2B HEX NUT<br>**----- End of picture text -----**<br>


## Mounting Detail 

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FOR PANEL INTEGRITY,<br>THIS HOLE MUST BE BLIND<br>WITH .075 [1.91] MIN. DEPTH<br>.125 .325<br>[3.18 [8.26<br>.391<br>[9.93<br>[ [<br>[<br>**----- End of picture text -----**<br>


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1.562 MAX.<br>[39.67]<br>**----- End of picture text -----**<br>


Panel Mounting Detail:  Tolerance for Mtg. ±.005 [.13] Maximum Panel Thickness:  .156 [3.96] 

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.656 MAX.<br>[16.66 ]<br>ON<br>.625 MAX.<br>[15.88]     OFF<br>KEYWAY<br>.060 - .065  WIDE<br>[1.52 - 1.65]<br>.026 - .030 DEEP<br>[.66 - .76]<br>**----- End of picture text -----**<br>


_**AP/UP, AP/MIL Series - Single Pole**_ 

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## MULTI-POLE CIRCUIT PROTECTORS 

## **AP Multi-Pole Combinations** 

Circuit demands and design ingenuity suggest a limitless number of special combinations, ranging from a two pole unit with one series breaker and a simple ON·OFF switch, to a more complex three pole unit having one series, one shunt and one relay configuration with auxiliary indicator circuit contacts. Please contact Airpax for specific part number. 

## **Two Pole, AP12** 

Two of the basic units are combined in a sealed case to provide protection for dual circuit. A single toggle handle actuates both internal trip mechanisms. Conversely, an overload in either circuit trips both simultaneously. 

The AP12 consists of two independent series trip protectors, each available with its own rating and delay characteristics. 

This two pole unit can therefore have an unlimited number of combinations, which makes ordering by a code system impractical. Thus, if the poles differ, a descriptive drawing is recommended. 

One frequent use of two pole protectors is to interrupt either or both sides of a power line. Likewise, three pole protectors often use three identical coils. However, any two or three pole protectors may have any coil of any delay in any desired combination. (Unless otherwise specified, we assume the two or three poles to be all alike.) 

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Two Pole, AP12, Toggle<br>1.780 MAX . .380 MAX.<br>[45.21]     [9.65]<br>NOTE A<br>.312<br>[7.92]     .625  [.62515.88]<br>MAX.<br>[15.88]<br>22º<br>.875<br>[22.23]<br>11º<br>RUBBER “O” RING .625<br>[15.88]<br>LOCK RING<br>1.281 MA X.<br>ON-OFF PLATE [32.53 ]<br>(OPTIONAL)<br>LOCKWASHER<br>3/8 –32 NEF-2B HEX NUT<br>**----- End of picture text -----**<br>


## Mounting Detail 

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.375<br>6-32 THD.<br>.188  4.78 DEEP[ ]     .375 [9.53<br>(2 PLACES) [9.53]     (2 PLACES).250  6.53[ ±.003±.076.37 5 ± .003±.076 . 9.53375<br>9.53<br>.875 ±.002 ±.051<br>MAX. .625 ON .625 .147 3.73<br>[22.23]    [15.88]     [15.88 .125 3.18[ FOR PANEL SEAL INTEGRITY,THIS HOLE MUST BE BLIND<br>WITH .075 [1.91] MIN. DEPTH<br>1.562 MAX.<br>[39.67]     OFF [.3258.26 .391  9.93[<br>KEYWAY Panel Mounting Detail:  Tolerance for Mtg. ±.005 [.13]<br>.060 - .065  WIDE Panel Thickness:  .125-.156 [3.18-3.96]<br>[1.52 - 1.65]<br>.026 - .030 DEEP<br>[.66 - .76]<br>[<br>[<br>[ [<br>[<br>[<br>**----- End of picture text -----**<br>


Note:  Tolerance ± .031 [.79] Angles: ±5° unless noted. Dimensions in brackets [ ] are millimeters. A:  Threaded inserts exceed seated height of bushing by .005-.015 [.13-.38] 

_**AP/UP, AP/MIL Series - Multi-Pole**_ 

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**79** 

combination. (Unless otherwise specified, we assume the two or three poles to be all alike.) 

Like the two pole protectors, each pole may have different ratings and delays. 

All multi-pole units have provisions for a rugged three point panel mount. Use of 6-32 panel seal screws together with the bushing mount is recommended to maintain specification shock and vibration levels. 

## **Three Pole, AP112** 

Three circuits may be simultaneously protected. One actuating toggle handle closes all circuits and all poles trip in the presence of an overload on any circuit. Some typical combinations could be: 3 series poles; 2 series and one shunt; 2 series and one relay; or 3 series with a set of auxiliary contacts. 

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Three Pole, AP112, Toggle<br>1.780 MAX . .380 MAX.<br>[45.21]     [9.65]<br>NOTE A<br>.312 . 625 . 62 5<br>[7.92]     .625  [15.88]     [15.88]<br>MAX.<br>[15.88]<br>22º<br>.875<br>[ 22.23]<br>11º<br>.937<br>RUBBER “O” RING [23.80]<br>LOCK RING 1 .937 MAX .<br>ON-OFF PLATE [49.20]<br>(OPTIONAL)<br>LOCKWASHER<br>3/8 –32 NEF-2B HEX NUT<br>Mounting Detail<br>6-32 THD. .250  6.53[[<br>.188  4.78 DEEP[[ ]     (2 PLACES)<br>(2 PLACES) .687 . 687 ±.003 ± .003<br>[17.45]    17.45]    ]     [17.4517.45 ±.076 . 68 7 ±.076 . 68 7 ±.002 ±.051<br>17.45 17.45 .147 3.73<br>.875<br>MAX. .625 ON .625<br>[22.23]    [15.88]    22.23]    [15.88]    ]    [15.88]    [15.88]    15.88]    ]     [15.88 .125  3.18[ THIS HOLE MUST BE BLINDFOR PANEL SEAL INTEGRITY<br>WITH .075 [1.91] MIN. DEPTH<br>1.562 MAX. .325<br>[39.67]    39.67]    ]     OFF [8.26 .391  9.93[<br>Panel Mounting Detail:  Tolerance for Mtg. ±.005 [.13]<br>KEYWAY Panel Thickness:  .125-.156 [3.18-3.96]<br>[<br>[<br>[ [<br>[ [<br>**----- End of picture text -----**<br>


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6-32 THD. .250  6.53[[<br>.188  4.78 DEEP[[ ]     (2 PLACES)<br>(2 PLACES) .687 . 687<br>[17.45]    17.45]    ]     [17.4517.45<br>.875<br>MAX. .625 ON<br>[22.23]    [15.88]    22.23]    [15.88]    ]    [15.88]    [15.88]    15.88]    ]<br>1.562 MAX.<br>[39.67]    39.67]    ]     OFF<br>KEYWAY<br>.060 – .065  WIDE<br>[1.52 – 1.65]<br>.026 – .030 DEEP<br>[.66 – .76]<br>[<br>[<br>**----- End of picture text -----**<br>


_**AP/UP, AP/MIL Series - Multi-Pole**_ 

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**80** 

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## CONFIGURATIONS 

## **Series Trip** 

The most popular configuration for magnetic protectors is the series trip where the sensing coil and contacts are in series with the load being protected. The handle position conveniently indicates circuit status. In addition to providing conventional overcurrent protection, it’s simultaneously used as a power disconnect. 

## **Shunt Trip** 

The shunt trip is designed for controlling two separate loads with one assembly. The control is established by providing overload protection for the critical load. When the current through this load becomes excessive and reaches the trip point the protector will open and remove power from both loads simultaneously. The total current rating of both loads must not exceed the maximum contact rating. 

## **Relay Trip** 

This permits the overload sensing coil to be placed in a circuit which is electrically isolated from the trip contacts. The coil may be actuated by sensors monitoring pressure, flow, temperature, speed, etc. Other typical applications include crowbar, interlock and emergency/rapid shutdown circuitry. Trip may be accomplished by voltage or current, which must be removed immediately upon tripping. 

## **Remote Indication, AP1-1R** 

AP series trip circuit protectors are available with electrically isolated contacts which are rated at 1/2 ampere, 120 volts AC or 50 volts DC. These contacts provide SPDT switching action which can be used to indicate “power-on” and “power-off” conditions or to actuate lights, alarms or timing devices. 

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Series Trip Optional Booted<br>AP1-1 Terminals<br>1.350 [±.050]<br>.312 34.29 [±1.27] ]    7<br>7.92]<br>1.562  MAX. .875<br>39.67]     22.22]<br>2X<br>UP1-1  RUBBER BOO T<br>(UL Recognized<br>Series)<br>1.012<br>25.70]<br>SCHEMATIC BOOT REMOVED<br>DIAGRAM FOR CLARITY<br>Shunt Trip Relay Trip (Note A)<br>AP1-3 AP1-4 (Relay)<br>.130 [±.010 ] .076 [±.010    ] DIA.<br>3.30 [±.25] ]      1.93 [±.25] ]<br>.438<br>[11.13]<br>.438<br>[11.13]<br>Series with Auxiliary Switch Switch with Auxiliary Switch<br>AP1-1R (Note A) AP1-1RC (Note A)<br>C NC C NC<br>NO<br>NO<br>NO NC C NO NC C<br>]<br>]<br>]     ]<br>]<br>]     ]<br>**----- End of picture text -----**<br>


## **Voltage Trip** 

Sometimes called “dump circuits” or “panic trip circuits,” these units make it possible to open main power contacts with lower power inputs from one or more sources. This configuration is becoming increasingly more important for sensitive circuitry and denser packaging in automation systems. Available in series, shunt or relay configurations. 

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 AP7-1 (Screw Terminal with Terminal Block)<br>6 - 32 x .187 4.75[ ]     SINGLE POL E<br>SCREWNO. 6 LOCKWASHER 1.780  45.21MAX. ]   DIM. FROMBACK OFPANEL.<br>MULTIPOLE<br>1.950  49.53]<br>MAX.<br>Note:  Tolerance ± .031 [.79] Angles: ±5° unless noted.<br>           Dimensions in brackets [ ] are millimeters.<br>          A. Main protector contacts open.<br>]<br>]<br>**----- End of picture text -----**<br>


_**AP/UP, AP/MIL Series - Configurations**_ 

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## OPERATIONAL CHARACTERISTICS 

## **SERIES RESISTANCE NOMINAL VALUES @ +25°C** 

## **Inrush Pulse Tolerance** 

The following table provides a comparison of inrush pulse tolerance with and without the inertial delay feature for each of the 50/60Hz delays. Pulse tolerance is defined as a single pulse of half sine wave peak current amplitude of 8 milli-seconds duration that will not trip the circuit protector. 

## **DELAy VS PEAK AMPLITUDE** 

|**DELAy VS PEAK AMPLITUDE**|**DELAy VS PEAK AMPLITUDE**|
|---|---|
|**Delay**|**Peak Amplitude**|
|61, 62, 71, 72,  A, B|4 Times Rated Current (60Hz)|
|61F, 62F, 71F, 72F|6.5 Times Rated Current (60Hz)|
|64, 65|10 Times Rated Current (60Hz)|
|64F, 65F|13 Times Rated Current (60Hz)|
|41, 42, AF, BF|14 Times Rated Current (400Hz)|
|41F, 42F|20 Times Rated Current (400Hz)|
|51, 52|6 Times Rated Current (60Hz)|
|51F, 52F, AF, BF|8 Times Rated Current (60Hz)|



|**SERIES RESISTANCE NOMINAL VALUES @ +25°C**|**SERIES RESISTANCE NOMINAL VALUES @ +25°C**|**SERIES RESISTANCE NOMINAL VALUES @ +25°C**|
|---|---|---|
|**Current Ratings**<br>**DC, 50/60Hz, 400 Hz**<br>**(Amps)**|**DC Series Resistance**<br>**All Delays except**<br>**40, 50, 60 (ohms)**|**DC Series Resistance**<br>**Delays 40, 50, 60**<br>**(ohms)**|
|0.050|470|105|
|0.100|145|27.0|
|0.250|18.0|3.80|
|0.500|4.30|1.00|
|0.750|1.60|0.400|
|1.00|1.15|0.230|
|2.00|0.298|0.060|
|3.00|0.130|0.033|
|5.00|0.052|0.012|
|7.50|0.025|0.007|
|10.0|0.016|0.006|
|15.0|0.006|0.005|
|20.0|0.005|0.004|
|_Tolerance at ±25% values based on V-A method after 1 hour stabilization_<br>_at 100% rated current. Consult factory for other limits._|||



## **PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)** 

|**PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)**|**PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)**|**PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)**|**PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)**|**PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)**|**PERCENTAgE Of RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C (VERTICAL MOUNT)**|
|---|---|---|---|---|---|
|**Delay**|**100%**|**125% (Note A)**|**200%**|**400%**|**800%**|
|40*|No Trip|.035 Max|.025 Max|.015 Max|.015 Max|
|41|No Trip|.200 to 7|.055 to .950|.010 to .240|.005 to .080|
|42|No Trip|3 to 60|.500 to 9|.010 to 1.75|.005 to .100|
|49*|No Trip|.100 Max|.050 Max|.020 Max|.015 Max|
|50*|No Trip|.035 Max|.025 Max|.015 Max|.015 Max|
|51|No Trip|.400 to 4|.060 to .600|.010 to .200|.005 to .035|
|52|No Trip|4 to 40|.600 to 6|.010 to 1.50|.005 to .050|
|59*|No Trip|.100 Max|.050 Max|.020 Max|.015 Max|
|60*|No Trip|.035 Max|.025 Max|.015 Max|.015 Max|
|61|No Trip|.500 to 5|.070 to .700|.020 to .200|.008 to .080|
|62|No Trip|4 to 40|.800 to 8|.010 to .300|.005 to .080|
|64|No Trip|.900 to 10|.200 to 1.70|.040 to .500|.012 to .100|
|65|No Trip|9 to 60|1.15 to 7|.110 to 1|.010 to .190|
|69*|No Trip|.100 Max|.050 Max|.020 Max|.015 Max|
|71 (Note B)|No Trip|.200 to 7|.055 to .950|.010 to .240|.005 to .080|
|72 (Note B)|No Trip|3 to 60|.500 to 9|.010 to 1.75|.005 to .100|
|79 (Note B)|No Trip|.100 Max|.050 Max|.020 Max|.015 Max|
|_*Notes:  Instantaneous delays (40, 49, 59, 60, 69, 79) are not compatible with inrush enhancement options and are not recommended for general use._<br>_A. 150% for delays 40, 50 & 60. 135% minimum trip for delays 41, 42, 49, 71, 72 & 79._<br>_B. Military time delays. 71=A, 72=B, 79=C_||||||



_**AP/UP, AP/MIL Series - Operating Characteristics**_ 

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**82** 

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## TyPICAL DELAy CURvES 

The delay curves below illustrate our standard instant, short and long delays. Please consult factory for specific delay curves or refer to table on page 87. 

Delay curves 64 and 65 illustrate the improved inrush tolerance provided compared to standard delays. Not available in MIL configurations. 

All trip times and trip currents are specified with the breaker mounted in the normal vertical position at ambient temperature of 25°C. For time delay test and measurement purposes, the breakers should not carry current prior to application of overload. 

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10000<br>1000 LONG<br>100<br>10<br>1<br>.1<br>.01<br>.001<br>0        100  150 200       300       400       500        600        700       800        900      1000<br>135<br>PERCENT OF RATED CURRENT<br>MAY  TRIP<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


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10000<br>1000 INSTANT<br>100<br>10<br>1<br>.1<br>.01<br>.001<br>0        100  150 200       300       400        500       600        700       800        900      1000<br>125<br>PERCENT OF RATED CURRENT<br>MAY  TRIP<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


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10000<br>1000 DELAY 64<br>100<br>10<br>1<br>.1<br>.01<br>.001<br>0        100  150 200       300       400        500       600        700       800        900      1000<br>125<br>PERCENT OF RATED CURRENT<br>MAY  TRIPMAY  TRIP<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


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10000<br>1000   SHORT<br>100<br>10<br>1<br>.1<br>.01<br>.001<br>0        100  150 200       300       400        500       600       700        800        900      1000<br>135<br>PERCENT OF RATED CURRENT<br>MAY  TRIPMAY  TRIP<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


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10000<br>1000 DELAY 65<br>100<br>10<br>1<br>.1<br>.01<br>.001<br>0        100  150 200       300       400        500       600        700       800        900      1000<br>125<br>PERCENT OF RATED CURRENT<br>MAY  TRIPMAY TRIP<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


_**AP/UP, AP/MIL Series - Delay Curves**_ 

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## **Trip free** 

AP circuit protectors will trip open on overload, even when forcibly held ON. This prevents the operator from damaging the circuit by holding the handle in the ON position. 

## **Trip Indication** 

The operating handle of the breaker moves forcibly and positively to the OFF position on overload. It is not necessary to manually “reset” to full “OFF” in order to turn it on again. 

## **Ambient Operation** 

The protector will operate at any ambient between –40° C and +100° C, when tested in accordance with the requirements of MIL-PRF-39019. 

## **Insulation Resistance** 

Exceeds 100 megohms at a potential of 100vdc. 

## **Dielectric Strength** 

The protector will withstand 1250 volts RMS, 60Hz from terminals to case and between the terminals when open. 

## **Endurance** 

With the circuit protector operated as an ON-OFF switch, operating life exceeds 10,000 operations at a rate of 6 per minute when tested as follows: 6000 OPS @ rated current plus 4000 OPS @ no load. 

## **Lever Strength** 

The operating lever or its seal will not be damaged by a 10 lb. force applied in any direction. 

## **Shock** 

All protectors withstand 100G without tripping, even while carrying full rated current with shock applied in any plane of 6 ms duration. Test is made according to Method 213, Test Condition I or MIL-Std-202 as outlined in Paragraph 4.6.14 of MIL-PRF-39019. Delay 40, 50 and 60 breakers are tested at 80% of rated current. 

## **Vibration** 

All protectors withstand vibration from 10 to 55 cycles at .06 double amplitude and 55 to 2000 cycles at 10G, applied in any plane, without damage and without tripping even while operating at full rated current. Test is made in accordance with Method 204A, Test Condition C, of MIL-Std-202 as outlined in Paragraph 4.6.12 of MIL-PRF-39019. Delay 40, 50 and 60 protectors are tested at 80% of rated current. 

## **Short Circuit Capacity** 

When tested in accordance with the procedures of UL1077, AP supplementary protectors have a short circuit capacity of 1000 amperes at 32vdc, 120vac, 240vac, 60 or 400Hz. Parts are recognized to UL1077 for type UP1 only. The rated Rupture Capacity per MIL-PRF-39019 is 500 amperes, 50 volts DC, 500 amperes, 120 volts AC and 300 amperes, 240 volts AC, 60 or 400Hz. 

## **Case Seal** 

## **Ratings** 

AP protectors are available in current ratings from 50 milliamperes to 20 amperes, 50 volts DC or 240 volts AC, maximum, 60 Hz or 400 Hz. UP protectors are UL 1077 and CSA approved as per the following table. Please consult factory for ratings other than those noted. 

The breaker is fully sealed and will not show evidence of leakage under total immersion. Meets requirements of MILPRF-39019. 

## **Panel Seal** 

The “O” ring provides, with the other illustrated hardware, a seal against a pressure differential of 15 psi applied for an hour. 

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RATINgS<br>Series Voltage Current TC OL Short Circuit Rating (SC, amps) CSA Phase<br>**----- End of picture text -----**<br>


|**RATINgS**||||||||
|---|---|---|---|---|---|---|---|
|**Series**|**Voltage**|**Current**|**TC**|**OL**|**Short Circuit Rating (SC, amps)**|**CSA**|**Phase**|
|||||||||
|UP|50 vDC|0.05 to 20 amps|1|1|U1, 1000|yES|—|
|UP|240 vAC|0.05 to 7.5 amps|1|0|C1, 1000 4X fuse max|yES|1|
|UP|120 vAC|0.05 to 15 amps|1|1|C1, 1000 4X fuse max|yES|1|
|UP|240 vAC (400)|0.05 to 7.5 amps|1|0|C1, 1000 4X fuse max|yES|1|
|UP|120 vAC (400)|0.05 to 15 amps|1|0|C1, 1000 4X fuse max|yES|1|



|**RECOMMENDED TORQUE SPECIfICATIONS**|**RECOMMENDED TORQUE SPECIfICATIONS**|
|---|---|
|**Component**|**Torque (in-lbs)**|
|6-32 Mounting Inserts|6 to 8|
|6-32 Screw Terminals|6 to 8|
|3/8-32 Mounting Bushing Nut|20 to 25|



|**AUXILIARy SWITCH RATINg**|**AUXILIARy SWITCH RATINg**|**AUXILIARy SWITCH RATINg**|**AUXILIARy SWITCH RATINg**|
|---|---|---|---|
|3.0 amps|@|120 vAC|50 vDC|
|||||
|**APPROXIMATE WEIgHT PER POLE**||||
|1.8 Ounces||49 Grams||



_**AP/UP, AP/MIL Series - Specifications**_ 

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## HOW TO ORDER 

The ordering code for AP magnetic circuit protectors may be determined by following the steps in the decision tables shown here. 

For example, the following is the code for a two pole AP, hook terminal, series unit, designed for operation in a DC circuit. It has a short time delay and a rating of 20 amperes. The coding given permits a descriptive part number, with limitations. In the illustrated double pole example (AP12-151-203), it is automatically assumed that both poles are identical. One great virtue of magnetic circuit protectors is their adaptability to complex circuits, thus variations from pole to pole become the rule rather than the exception. Descriptive drawings are recommended. In this event, factory assigned part numbers are utilized. 

## **Notes:** 

- A  The UP has a wide glass terminal to meet UL and CSA creepage specifications. Except as completely non-standard there is no space for more than two terminals and the UP is therefore limited to only the single pole series circuit configuration (Third Decision Table – 1). Delays available in the UP are: 40, 50 and 60; 41, 51 and 61; 42, 52 and 62; 64, 65, 69, 71, 72 and 79. 

- B  Users should refer to the applicable drawings of MIL-PRF-39019. Configurations vary dependent upon the revision of MIL-PRF-39019. The 6-32 threaded mounted bushings, useful for added strength, are approved under this specification. 

To determine the ordering number for your particular AP unit, simply follow the steps shown. you may use this number to place a order or as a reference for further questions you may have. 

To assure that proper parts are received, consult the factory for application assistance if there is any doubt about which version is correct for the application concerned. 

- C  Screw terminals are available and are equipped with standard terminal block. Space permits their use only in  the series configuration (Third Decision Table ). Standard terminals are heavy copper hooks. 

- D  Screw terminals with SPDT auxiliary switch, available only with the series circuit, may have “R” soldering terminals, flattened and pierced, or “RC” soldering terminals which are cane hooks. Screw terminals (–7, –17, –117) are available with SPDT auxiliary switch “R” type only. 

- E  The nominal current values for 100% of rated current (see delay curves) are those listed. Other values can be readily supplied, in general, without delayed delivery. For values above or below the listed range, please consult an Airpax sales office or sales representative. 

- F Consult factory for assigned part numbers. 

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**----- Start of picture text -----**<br>
1 First Decision Example: 6 Optional<br>Type AP12 -1 -51-203-FM  FM Approved (Factory Mutual Research)<br>AP Fully sealed magnetic Add –FM to part number to indicate FM<br>circuit protector 1 2 3 4 5 6 approval. FM approval is available for<br>Single Pole, Series Trip, UP type units only.<br>UP Underwriters' Laboratories TA = –40ºC to +65ºC<br>(Note A)  recognized circuit  Units < 10A are rated CL 1, DIV 2,<br>supplementary protector                Group ABCD, T6<br>Units > 10A are rated CL 1, DIV 2,<br>AP - MIL /1 through /6 QPL per<br>(Note B) MIL-PRF-39019               Group ABCD, T4A<br>2 Second Decision  [(] Note C [)] 4 Fourth Decision 5 Fifth Decision  [(] Note E [)]<br>Poles Hz and Delay Nominal Amperage Rating<br>Hook Screw -40 400Hz 150% instant trip* Code Amperes<br>Terminals Terminals<br>-41 400Hz short time delay -051 .050<br>1 7 Single pole unit, -101 .100<br>mounted with  -42 400Hz long time delay<br>3/8 threaded bushing  -201 .200<br>-49 400Hz 135% instant trip*<br>-251 .250<br>12 17 Two pole unit,<br>bushing plus (2) 6-32 -50 DC 150% instant trip* -401 .400<br>threaded inserts -51 DC short time delay -501 .500<br>112 117 Three pole unit,  -52 DC long time delay -601 .600<br>bushing plus (2)  -751 .750<br>6-32 threaded units -59 DC 125% instant trip*<br>-102 1.000<br>-60 50/60Hz 150% instant trip* -1251 1.250<br>-61 50/60Hz short time delay -1751 1.750<br>-62 50/60Hz long time delay -202 2.000<br>3 Third Decision -252 2.500<br>-64 50/60Hz high pulse,<br>Internal Configuration short time delay (50/60Hz only) -302 3.000<br>-502 5.000<br>-0 Switch Only -65 50/60Hz high pulse,<br>(Omit 4th and 5th Decisions) long time delay (50/60Hz only) -702 7.000<br>-69 50/60Hz 125% instant trip* -752 7.500<br>-1 Series<br>-802 8.000<br>-71 DC, 50/60Hz,<br>-1R Series with Auxiliary Switch 400Hz short time delay 135% trip -103 10.000<br>(Note D) with pierced pin terminals -72 DC, 50/60Hz, -123 12.000<br>-1RC Series with Auxiliary Switch 400Hz long time delay 135% trip -153 15.000<br>(Note D) with cane hook terminals -79 DC, 50/60Hz, -173 17.000<br>400Hz instant time delay 135% trip*<br>-3 Shunt -203 20.000<br>For addition of inertial delay, add an ìFî to any delay Note: Standard current ratings listed.<br>-4 Relay (5 amps max coil rating) number.  Except 40, 50 & 60. For other ratings, please consult the factory.<br>*Instantaneous delays are not compatible with<br>Multi-pole units with mixed construction, poles numbered left  inrush enhancement options and are not recommended<br>to right when viewed from terminal end (Note F). for general use.<br>**----- End of picture text -----**<br>


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_This document is generated from the AIRPAX™ full-line catalog #2455005000 printed in USA, January 2011_ 

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Important Notice: Sensata Technologies (Sensata) reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Sensata advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current. Sensata assumes no responsibility for infringement of patents or rights of others based on Sensata applications assistance or product specifications since Sensata does not possess full access concerning the use or application of customers’ products. Sensata also assumes no responsibility for customers’ product designs. 

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