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Mean Well PSC-35B Battery Chargers 35.88W 27.6V 0.85A - PFC
Overview
PSC-35B is the CH1: 27.6V / CH2: 27.6V output model of this series: rated current CH1: 0.85A / CH2: 0.45A, rated power 35.88W, typical efficiency 86%. Type Blank: PCB type.
PSC-35 series is a 35W AC/DC security power supply, allowing the universal input range between 90VAC and 264VAC and incorporating the built-in PFC function. In addition to the primary output, there is a charger output, with a smaller rated current, providing the backup application the security access systems normally need. PSC-35 delivers an efficiency up to 86%; it can operate with air convection under -30℃ through 70℃. This series is designed with thorough alarm features, including AC OK and battery low signaling; moreover, the relay contact is provided to facilitate users system designs. PSC-35 is available in the PCB type (3.3" x 2").
Features
- Universal AC input / Full range
- 3.3"x2" compact PCB size
- Models with L-Bracket and cover available (PSC-35x-C, x=A,B)
- Protections: Short circuit / Overload / Over voltage
- Battery low protection / Battery reverse polarity protection by fuse
- Alarm signal for AC OK and Battery low
- Cooling by free air convection
- 100% full load burn-in test
- 2 years warranty
Specifications
OUTPUT
- OUTPUT NUMBER
- CH1 / CH2
- DC VOLTAGE
- CH1: 27.6V / CH2: 27.6V
- RATED CURRENT
- CH1: 0.85A / CH2: 0.45A
- CURRENT RANGE
- CH1: 0 ~ 1.3A / CH2: --------
- RATED POWER
- 35.88W
- RIPPLE & NOISE (max.)Note.2
- CH1: 240mVp-p / CH2: --------
- VOLTAGE ADJ. RANGE
- CH1: 24 ~ 29V
- VOLTAGE TOLERANCENote.3
- CH1: ±1.0% / CH2: --------
- LINE REGULATION
- CH1: ±0.5% / CH2: --------
- LOAD REGULATION
- CH1: ±0.5% / CH2: --------
- SETUP, RISE TIMENote.4
- 800ms, 50ms/230VAC 1600ms, 50ms/115VAC at full load
- HOLD UP TIME (Typ.)
- 50ms/230VAC 10ms/115VAC at full load
INPUT
- VOLTAGE RANGE
- 90 ~ 264VAC 127 ~ 370VDC
- FREQUENCY RANGE
- 47 ~ 63Hz
- EFFICIENCY (Typ.)
- 86%
- AC CURRENT (Typ.)
- 0.75A/115VAC 0.5A/230VAC
- INRUSH CURRENT (Typ.)
- COLD START 20A/115VAC 40A/230VAC
- LEAKAGE CURRENT
- <1mA / 240VAC
PROTECTION
- OVERLOAD
- 105 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- CH1:28.98 ~ 39.5V Protection type : Shut down O/P Voltage, repower on to recover
- BATTERY CUT OFF
- 20±1V
FUNCTION
- AC OK
- TTL open collector output, ON : AC OK ; OFF : AC Fail ; Ice : max. 30mA@ 50VDC
- BATTERY LOW
- TTL open collector output, ON : Battery Low ; OFF : Battery OK ; Ice : max. 30mA@ 50VDC Battery low voltage : < 22V
ENVIRONMENT
- WORKING TEMP.
- -30 ~ +70℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -20 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0~50℃) on CH1 output
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004 approved
- WITHSTAND VOLTAGE
- I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, light industry level, EAC TP TC 020
OTHERS
- MTBF
- 4114.3K hrs min. Telcordia SR-332 (Bellcore) ; 658.4K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- PCB:84.6*50.8*24mm (L*W*H) ; Enclosed type:86.4*59.6*30mm (L*W*H)
- PACKING
- PCB:0.092Kg;90pcs/9.28Kg/0.97CUFT ; Enclosed type: 0.145Kg;100pcs/15.5Kg/1.03CUFT
MODEL ENCODING
- Blank (this model)
- PCB type
- C
- Enclosed type
Test conditions and notes8
- 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
- 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
- 3. Tolerance : includes set up tolerance, line regulation and load regulation.
- 4. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
- 5. Heat sink HS1,HS2 can not be shorted.
- 6. Heat sink HS1 must have safety isolation distance with system case.
- 7. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
- 8. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
Technical drawings
Typical applications
- Security system
- Emergency lighting system
- Alarm system
- UPS system
- Central monitoring system
- Access systems
Downloads
Datasheet1
Certificates7
Test reports1
Catalogues1
FAQ
Can I use the PSC-35B for a small 24V industrial backup power application?
It provides 27.6V constant-voltage output at up to 0.85A on CH1, with 35.88W total output power. That makes it appropriate for smaller 24V-class backup or charging applications that use a 27.6V profile and stay within 0.85A.
Is the PSC-35B suitable for low-power telecom or monitoring equipment on a 24V-class battery system?
For low-demand DC backup roles, this model offers 27.6V and 0.85A from a 90-264VAC input range. It fits 24V-class telecom, monitoring, or remote control equipment where the total requirement stays within 35.88W.
Can the PSC-35B work for embedded or automation loads that need a 24V-class charger with UPS function?
Yes, for lighter-duty use cases it combines 27.6V output with 0.85A current capability and UPS function support. It is best matched to low-power embedded or automation systems rather than higher-demand 24V loads.
Is the PSC-35B meant for indoor or outdoor service?
The unit is specified for -30°C to +70°C operation, which supports a wide indoor temperature range. The provided specifications do not include an IP rating, so outdoor suitability is not confirmed by this data.
How does the PSC-35B compare to the other 27.6V PSC models?
At 27.6V, PSC-35B is 35.88W and 0.85A. The PSC-35B is the lowest-current and lowest-power 27.6V model in that set.
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