MIL-DTL-17587C(SH)
4.5.5.1.1 Test position.
4.5.5.1.1.1 Main contact de-energization and rack-in/rack-out position indicator operation. Verify by
measurement that the main contacts are de-energized and visually verify that the rack-in/rack-out position indicator
is in the "test" position.
4.5.5.1.1.2 Cell switch operation. The cell switch shall be verified by measurement to be in the open position.
4.5.5.1.1.3 Electrical cycling and mechanical position indicator operation. The circuit breaker shall be cycled
electrically to verify that control power is still available. Visually verify that the mechanical position indicator
properly shows the open/closed state of the main contacts as the circuit is cycled.
4.5.5.1.1.4 Manual cycling and mechanical position indicator operation. The circuit breaker shall be cycled
manually. Visually verify that the mechanical position indicator properly shows the open/closed state of the main
contacts as the circuit breaker is cycled.
4.5.5.1.1.5 Anti-rolling verification. With a 25-pound force applied to the front of the circuit breaker in the
horizontal direction towards the cradle backplane, the following criteria shall be met. The force shall be applied as
close to the center of the circuit breaker as possible. An instrument or device shall be used to measure and verify
that a 25-pound force is applied.
a. The circuit breaker shall not move in and out on the cradle rails/tray.
b. The circuit breaker shall not fall off the cradle rails/tray.
c. No part of the circuit breaker shall come off the cradle rails/tray in such a manner as to require manual
repositioning of the circuit breaker.
4.5.5.1.2 Disconnect position.
4.5.5.1.2.1 Withdrawal interlock mechanism and rack-in/rack-out position indicator operation. As the circuit
breaker is racked out to the disconnect position, verify by measurement that the withdrawal interlock mechanism
opens the circuit breaker main contacts and visually verify that the rack-in/rack-out position indicator is in the
"disconnect" position.
4.5.5.1.2.2 Cell switch operation. The cell switch shall be verified by measurement to be in the closed position.
4.5.5.1.2.3 Manual cycling and mechanical position indicator operation. The circuit breaker shall be cycled
manually. Visually verify that the mechanical position indicator properly shows the open/closed state of the main
contacts as the circuit breaker is cycled.
4.5.5.1.2.4 Anti-rolling verification. With a 25-pound force applied to the front of the circuit breaker in the
horizontal direction towards the cradle backplane, the following criteria shall be met. The force shall be applied as
close to the center of the circuit breaker as possible. An instrument or device shall be used to measure and verify
that a 25-pound force is applied.
a. The circuit breaker shall not move in and out on the cradle rails/tray.
b. The circuit breaker shall not fall off the cradle rails/tray.
c. No part of the circuit breaker shall come off the cradle rails/tray in such a manner as to require manual
repositioning of the circuit breaker.
4.5.5.1.3 Withdrawn position.
4.5.5.1.3.1 Manual cycling and mechanical position indicator operation. The circuit breaker shall be cycled
manually. Visually verify that the mechanical position indicator properly shows the open/closed state of the main
contacts as the circuit breaker is cycled.
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