Detectors

SANWA detectors cover two quick field checks: phase sequence and open phase on three-phase lines, and a pen-style test for live AC. Bhumika is SANWA’s authorized Canadian distributor and provides quotes for Canada.

Which detectors does Bhumika supply?

SANWAKS1SANWA KS1 Contact-Type Phase Detector

Contact-type 3-phase detector for phase sequence and open phase.

3-phase 100–500 V
CAT III 500 V
Approx. 212 g

3-phase AC 100–500 V · CAT III 500 VView specifications →

SANWAKS3SANWA KS3 Phase and Motor Rotation Detector

Phase detector that also checks motor rotation before power is connected.

3-phase 75–500 V
CAT III 500 V
Motor rotation

3-phase AC 75–500 V · 40–400 Hz · CAT III 500 VView specifications →

SANWAKD3SANWA KD3 Low Voltage Detector

Pen-style AC voltage detector with a beep, LEDs and two sensitivity settings.

80–600 V AC
HIGH / LOW sensitivity
Approx. 20 g

80–600 V AC · 50/60 Hz · HIGH/LOW sensitivityView specifications →

Compare models

Figures are shown only where SANWA publishes them. “Not stated” means SANWA does not publish a figure for that model — it does not mean the instrument lacks the capability.

Model	Voltage range	Measurement	Safety	Size / mass	Power
KS1	3-phase AC 100 to 500 V	Open phase and phase rotation detection	IEC 61010-1 CAT III 500 V	102 (H) × 78 (W) × 32.5 (D) mm / approx. 212 g	Not stated
KS3	3-phase, AC 75 to 500 V (sine wave, continuous)	Motor rotation direction, open phase and phase sequence	IEC 61010-1 CAT III 500 V	128 (H) × 72 (W) × 38 (D) mm / approx. 210 g	6LR61 / 6LF22 (9 V)
KD3	80 to 600 V AC, 50/60 Hz	Not stated	Not stated	134 (H) × 20 (W) × 18 (D) mm / approx. 20 g	LR44 (1.5 V) × 2

What should I consider before buying?

Choose KS1 for a contact-type phase sequence and open-phase check on 100–500 V lines with large alligator clips. Choose KS3 when you also want to check motor rotation direction before connecting the supply; it covers 75–500 V at 40–400 Hz. Both are rated CAT III 500 V. Choose KD3 when you need a pen-style low voltage detector for 80–600 V AC at 50/60 Hz, with HIGH sensitivity for jacketed wire and LOW for bare live parts; SANWA’s page states no CAT rating for it.

What do buyers usually ask?

Which detector checks motor rotation?

KS3 can determine motor rotation direction before the power supply is connected, at rotation speeds from 2 Hz to 400 Hz.

What safety rating do they carry?

KS1 and KS3 are both specified to IEC 61010-1 CAT III 500 V. SANWA’s KD3 page lists a 2000 V AC dielectric strength between sensor and grip but states no CAT rating.

What voltage range does each cover?

KS1 covers 3-phase AC 100 to 500 V at 45 to 70 Hz; KS3 covers 3-phase AC 75 to 500 V at 40 to 400 Hz.

Which detector checks for live AC voltage?

KD3 is a pen-style low voltage detector for 80 to 600 V AC, 50/60 Hz, with a beep and blinking LEDs and a HIGH/LOW sensitivity switch.