How much current does the 24V AC coil draw?

The coil definitely does NOT draw 24mA. That would mean a coil resistance of 1K ohms. The measured resistance of the coil (sample of one) is 13.7 ohms. The current at 24 volts would be about 1.75A. This is likely the greatest load on the controller circuit, and explains the 3A fuse.

Will this replace cr453ce3hblay contactor?

It was a correct fit for my 26 year old AC unit. Has worked well for the past two years since I installed it.

Does this replace DP24024F?

Just from the part number you gave: DP is Double Pole, 240 is 240 volt rated for the main contacts, 24 is 24volts control voltage, F: I don't know what that means to whatever company sells that. But this will switch any heavy load up to 40 amps, up to 240volts. Normally for air conditioning compressors, but you could use it to switch much smaller loads as long as you've got 24volts to switch it with.

I need to replace: ac relay 1 hp 115/230 volts ac i ph - 25 amp type pr5ay - 25v 50/60c potter brumfield. this works?

Yes. Just as long as you wire everything you needed. Problem is it's a 40 amps relay and you wants to protect a 25 amps circuit. Better to look for a 25 amps relay contact switch.

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⚡ Upgrade your HVAC game with Migro’s powerhouse contactor!

POWER PACKED 40 AMP RATING - Handles high electrical loads with ease for reliable HVAC performance.
HEAVY DUTY TERMINAL DESIGN - Robust lug and push-on terminals for secure, high-voltage connections.
UNIVERSAL 2 POLE REPLACEMENT - Seamlessly swaps with most residential 2-pole contactors from top brands.
24 V COIL WITH SEALED CONTACTS - Encapsulated design protects against dust and moisture for consistent operation.
DURABLE SILVER ALLOY CONTACTS - Ensures long-lasting conductivity and resistance to wear.

The Migro 2-pole 40AMP contactor features a high-quality silver alloy contact system and a 24V coil, designed for universal replacement across most residential HVAC units. With a durable sealed contact design and heavy-duty terminals, it ensures reliable, long-term performance backed by a 2-year replacement policy.

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Brand	Migro
Package Dimensions	8.71 x 7.9 x 5.51 cm; 290 g
Material	高品質のシルバー合金含有コンタクタ。
Voltage	24 Volts
Are Batteries Included	No
Item Weight	290 g

Migro 2極 40AMP 高耐久ACコンタクタは、実質的にすべての住宅用2極モデルと交換できます (シルバー合金含有コンタクタ)。

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