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ACSI 1426BB POWER SUPPLY
ACSI Series 1400 Power Supplies are designed to provide power/control to electrified door hardware. The Class 2 rated outputs feature overload, over voltage, and short circuit protection. ACSI Series 1400 products are UL Listed and tested to UL 294 standard.
1426BB Series only:
Select from independent control of single exit devices from separate inputs (one or two single doors) or sequential operation of two exit devices from a single input (pair of doors).
• Automatic door operator interface
• Fire alarm interface
• Field adjustable latch retraction time delay
• 24VDC, 12VDC* constant voltage outputs
(250mA each)
1426BB Power Supplies
ACSI 1406 and 1426 Power Supplies are designed to operate exit devices equipped with ACSI Series 1550 Electric Latch Retraction (required with 1550 Electric Solenoid Latch Retraction).
Provides a separate input for retracting one exit device or two exit devices sequentially without activating the automatic door operator. While the latches are held retracted, the auto-operator can be activated independently from a different input.
1426BB Power Supplies with Battery Backup
All the same features as above, but includes built-in battery backup power.
• 4 hours of backup power at full load during AC power failure.
• Standby battery power with a supervised AC failure output and low battery output.
• Supplied with (2) 12V, 7Ah lead acid batteries.
FEATURES
• UL Listed and tested to UL 294 standard
• Class 2 rated outputs
• 2A load capacity
• Overload, over voltage, and short circuit protection
Manufacturer Resources
Product Specs
- Series:
- 1400 Series
- Subcategory:
- Linear Power Supplies
- Fire Alarm Relay:
- Yes
- Product Group:
- Electronic Access Controls
- Product Subgroup:
- Controllers, Power Supplies and Transformers
- Commercial/Residential:
- Commercial
- Electronic:
- Yes
- Battery Operated:
- Yes
- Product Type:
- Controllers, Power Supplies and Transformers
- Product Model:
- 1426BB
- Collection:
- 1400 Series
- Product Category:
- Electronic Access Controls
- Department:
- Door Hardware
ACSI 1426BB – Frequently Asked Questions
1) What power supply do I need for an exit device with ACSI 1550 electric latch retraction?
The ACSI 1426BB is one of the power supplies built for that job. ACSI 1406 and 1426 power supplies are designed to operate exit devices equipped with ACSI Series 1550 Electric Latch Retraction, and a 1550 electric solenoid latch retraction device requires one of them. Latch retraction draws a heavy inrush that a general purpose access control supply is not built for, which is why the 1400 Series is matched to the device rather than picked on voltage alone.
2) Can the ACSI 1426BB run two exit devices on a pair of doors?
Yes, and it handles the pair correctly. You select either independent control of single exit devices from separate inputs (one or two single doors), or sequential operation of two exit devices from a single input for a pair of doors. Sequential matters on a pair because firing both latch retraction solenoids at the same instant doubles the inrush; the 1426BB staggers them off one input instead.
3) Does the ACSI 1426BB keep the doors working if the building loses power?
It carries built-in battery backup: 4 hours of backup power at full load during an AC power failure, supplied with two 12V 7Ah lead acid batteries. It also provides standby battery power with a supervised AC failure output and a low battery output, so a head end panel can be told the supply has dropped to batteries or that the batteries are getting weak.
4) Will the ACSI 1426BB tie into the fire alarm so the latches drop on alarm?
There is a fire alarm interface on the 1426BB, so the supply takes a signal from the building fire alarm and releases latch retraction. That is normally a code condition on an egress door with electric latch retraction: on alarm the device has to return to mechanical operation. The supply also has an automatic door operator interface for the same opening.
5) Can I use the ACSI 1426BB to retract the latch without triggering the auto operator?
Yes. It provides a separate input for retracting one exit device, or two sequentially, without activating the automatic door operator. While the latches are held retracted, the auto operator can be activated independently from a different input. That is the setup you want when the door is unlatched for a delivery window or scheduled unlock but you do not want the operator swinging the door every time.
6) Is the ACSI 1426BB power supply UL listed for access control?
It is UL Listed and tested to the UL 294 standard, which is the access control system units standard an AHJ or a spec writer will look for on an electrified opening. Outputs are Class 2 rated. For an institutional submittal, that listing is the line that matters on the cut sheet.
7) What is the Securitron equivalent to the ACSI 1426BB power supply?
The closest peers to the ACSI 1426BB are the Securitron BPS linear box power supply and the Securitron BPSM self-monitoring power supply. All three are boxed power supplies for electrified door hardware. The 1426BB is the one to specify when the opening uses ACSI Series 1550 electric latch retraction exit devices, since the 1426BB is built to drive those and provides a separate input for retracting one exit device or two exit devices sequentially. It is UL Listed and tested to UL 294, with Class 2 rated outputs, 2A load capacity, and overload, over voltage and short circuit protection. The Securitron BPS is a general-purpose linear supply rather than a latch retraction controller.
8) Can I adjust how long the latch stays retracted on the ACSI 1426BB?
Yes, there is a field adjustable latch retraction time delay, so you set the hold-open retraction window at the supply during commissioning rather than ordering a fixed timing. Useful where a delivery door or a high traffic entry needs a longer unlatched period than the default.
9) Do I have to buy batteries separately for the ACSI 1426BB?
No. The BB suffix means battery backup, and the supply ships with two 12V 7Ah sealed lead acid batteries included, giving 4 hours at full load on an AC failure. If you do not need standby power, the non-backup 1426 covers the same control features without the batteries.
10) I need a power supply that reports its own status back to the panel - is the ACSI 1426BB or the Securitron BPSM the right choice?
Both give you a supervision signal, from different angles. The Securitron BPSM is a self-monitoring power supply in the BPSM series. The ACSI 1426BB carries built-in battery backup with a supervised AC failure output and a low battery output, so the head end sees both a utility loss and a depleted battery. The 1426BB also holds four hours of backup power at full load during an AC power failure and is supplied with two 12V, 7Ah lead acid batteries. Choose the 1426BB where the same enclosure also has to drive ACSI Series 1550 electric latch retraction; choose the BPSM where the requirement is monitoring on a general-purpose supply.
11) Do I need a separate fire alarm relay module if I use the ACSI 1426BB?
The ACSI 1426BB includes a fire alarm interface as a built-in feature, so the latch retraction release on alarm is handled inside the same enclosure rather than by an added relay. It also includes an automatic door operator interface, letting the auto-operator be activated independently from a different input while the latches are held retracted. Among the peer supplies, the Securitron BPS is a linear box power supply and the Securitron BPSM is a self-monitoring power supply; where those are used the alarm interface and operator sequencing are handled elsewhere in the system.
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Does the ACSI 1426BB come with a warranty?
Absolutely. The ACSI 1426BB is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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